Wind Direction is: 3.0 o'clock and a Wind Velocity of: 10.0 Miles per hour. Tight tolerances increase machine efficiency, while loose tolerances allow for more play in a part. When looking at .277 Fury's ballistics, . I like them- in some ways you dont lose a lot. Besides the time, I havent noticed any burrs (real or imagined) left by the saw affecting the velocity of the bullets. You may not reproduce original text or photos without advanced permission in writing. Read on, and it will all make sense. CLICK HERE to Read the Rifleshooter.com Test. I fired 30 rounds of IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the results. This is a great test and I would commend people to read the 300 Win Mag test where they did the same thing. Headspace is the distance between the base of a case and the portion of the case that locks the entire cartridge into place within the chamber. The 308 is slightly more powerful and has a longer range. It is outside the scope of this post. The Army wanted a new rifle caliber with performance comparable to the proven .30-06 but with a shorter overall length, a new wonder cartridge. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. Barrel length, Barrel length and velocity, External Ballistic Data, Rifles The bolt action pistol with a 5 barrel (above). The vast majority of rifles, carbines, and pistols chambered in .308 Winchester can safely sling 7.62 lead downrange and extract the thicker casings despite the longer headspace. If you have a newer 7.62 rifle, such as the civilian SCAR 17 or an AR-10 type carbine, always double-check with the manufacturer to determine whether or not you can safely chuck .308 rounds downrange. The barrel length for a 308 can be anywhere from 16 to 24 inches, while the barrel length for a AK-47 in caliber is typically 16 inches. AVG 28 ft/sec and AVG 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given barrel length. December 27, 2014 In The truth about barrel length, muzzle velocity and accuracy the author uses four different barrel lengths, 13.5, 16, 18 and 26.5, and eight different cartridges. It fires a .312-inch-diameter bullet as opposed to a .308-inch-diameter bullet and operates at 45,000 psi as opposed to 40,000. UPDATE 12/30/14: I tapered the barrel and installed a brake. We (well, Jim K, Using one of the many bullet drop calculators available on various ammunition manufacturer websites, we can measure different bullets and distances easily. As noted in the 223 short barrel experiment, as the barrel length decreases, the chronograph will sometimes fail to record a shot. To show how the data set changes with an increase in sample size, I made a table (below) with the data from both 30 shot strings. No complaints, no problems. I offered to let him shoot it. 20" seems to be ideal for the 7/08 and the 308. from 18" to 20" on a 7/08 I gained almost 200 ft/sec. Average velocity and standard deviation were logged for each round. The testers observed: The Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel., The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Compare that to a 5.56 Ball M193 round's 55 grain bullet, which delivers a . 7.62x51mm) and .308 Winchester the same thing? This resulted in a velocity loss of 118 feet/second. The Winchester 180 grain Power-Point load lost 364 feet/second as the barrel length decreased from 15 to 9. And thanks to our spouses, who were not just tolerant but enthusiastically supportive 300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16 300 Win Mag? These figures give this bullet a 4.4 out of 20 power rank using our algorithm. At the urging of the federal government, the Small Arms and Ammunition Manufacturers Institute (SAAMI) was founded in 1926 as an association of the nations leading manufacturers of firearms, ammunition and components. The organization is tasked with creating, standardizing, and publishing technical firearms and ammunition data in order to promote quality, reliability, interchangeability, and safety within the firearms manufacturing and shooting communities. Stay safe, yall! When you switch this out with a .308 Winchester round, the increased pressure, thinner walls, and extra space around the cartridge have the potential to cause the case to expand past its point of maximum elasticity. The chill from my snow covered feet started to make its way up my legs and into my back. SDs and ES were superior from the longer barrel, as was the sight picture. Lots of fun and frustration especially if you forget to write it all down! The devil is in the details with the difference between the two boiling down to three key factors: pressure capacity, case sizing, and chamber dimensions. I shook vigorously from head to toe. Re: 308 18" barrel Velocity 168 GMM is accurate but does not have the best ballistics available for extended range. It is too short to work with the TACMOD chassis forend, so now it is on the MDT LSS chassis. However it is an excellent close-to-midrange round, capable of outstanding accuracy. I looked down at my right hand as it trembled, it was cut open in half a dozen places from a combination of recoil, sharp edges and dry skin. _gaq.push(['_trackPageview']); A. The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. _gaq.push(['_setDomainName', '.accurateshooter.com']); A. this insane project much more practical. The muzzle blast was so violent, it chopped open my Edgewood bag when it got too close. The short barrels gas out pretty quickly. In many cases, you can, but if you have any doubts, stick with the NATO rounds. The barrel was cut off using a cold saw. These seem much more durable over the long run. cylinder gap + Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. Temperature was 47 F.. Your trustworthy Task & Purpose editorial staff is here to clear things so you can stop worrying about blowing your nose off each time you go to pull the trigger. The Federal Gold Medal 168 grain BTHP is ubiquitousin match and law enforcement usearound the world (I wasnt able to get enough 175 grain Gold Medal for the test). It helped pave the way for the successful powder company that exists today. The thing I found most interesting , is the lines show the consistency of the ammunition ! This was an average decrease of 81.7 feet/second per inch of barrel length. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? The 180 grain .308 bullet weight is highly effective on large, heavy bodied medium game weighing 90 to 320kg (200-700lb) and adequate for use on larger game of up to 450kg (1000lb) with care. Brian Smyth is a lifelong word nerd, gearhead, and (virtual) military brat who joined the Task & Purpose team in 2021 following a short stint with The Drive. There are plenty of good sources of information on this topic. Youd think I was disappointed, however, there was a smile on my face. Here are some pics: I get this every so often. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. This chart shows velocity changes for all four ammo varieties: Summary of Findings: If they did, I would have noticed the first round fired for every barrel length slower then the subsequent rounds. 22" is optimum for the 308,Longer will get more velocity, but at a price. Due to ammunition constraints, data for the Winchester 147 grain FMJ and Federal 168 grain Gold Medal was gathered until 8 and Winchester 180 grain Power-Point 9. Thank you. the Excel data sheets, with the muzzle energy calculations added in red, on the raw Built with parts from Brownells, the pistol includes: Velocity data was recorded with a MagnetoSpeed barrel mounted ballistic chronograph. Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. The cartridge case (a.k.a. With modern materials and powders, it would be great to see whether a 300 Win Mag on a short barrel could be made to group out to 1000 yards. real world guns. My data showed an average change of 27 ft/sec per inch of barrel. Very well. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. Skip to main content; Skip to secondary menu; Skip to primary sidebar; . This was an average decrease of 60.7 feet/second per inch of barrel length. It was LOUD. However, testing indicates it may not be as much as initially thought. While the .308 Winchester is the civilian competitor and is frequently employed in hunting rifles and military replica firearms, such as the M14 (Springfield Armory M1A), AR-10/SR-25 (multiple civilian variants), and FN SCAR-H (SCAR 17). Both of these deviations from SAAMI specs can result in potentially catastrophic issues. I selected Federal 190 grain Gold Medal ammunition for this test. The .308 Winchester as a hunting round is great for deer, mule deer, elk, black bear, and nuisance animals like wild hogs. 308 Winchester: BBA JHP: 175: 2832: 2700: 308 Winchester We also have a 223 and 7 rem mag up there. My calculations assume a 1.75 sight over bore height. 100% real. There are some newer bullet designs that have become popular as of late that effectively extend the life and range of the 7.62x51mm NATO/308 Winchester even further. 30-30 Ballistics Chart & Coefficient. Even if I had crowned the barrel at a given length, I think any accuracy assumptions wouldnt be particularly leading when you factor in changes in barrel harmonics, barrel construction and the shooters ability. You may not reproduce original text or photos without advanced permission in writing. 308 Winchester/ 7.62x51mm NATO Comparison of velocity data. A summary of the data for all four cartridges is provided below. That is actually not correct. the firearms community. ga.src = ('https:' == document.location.protocol ? Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. _gaq.push(['_setAccount', 'UA-6323545-2']); The answer may surprise you. That said, we wouldnt make a habit of it. Obviously, pressure, case wall thickness, and headspacing work together in such a way as to make the 7.6251 NATO and the .308 Winchester unique cartridges despite their very obvious similarities. It will a produce a line graph showing the bullet drop and flight path of the bullet. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. This was the best one. Cutting the barrel from 28 to 16.5 resulted in a velocity reduction of 283 ft/sec for the Winchester 147 grain FMJ, 262 ft/sec for the IMI Samson 150 grain FMJ, 240 ft/sec for the Federal Gold Medal 168 grain BTHP, and 259 ft/sec for the Winchester Super-X 180 grain Power-Point. Ballistics by the Inch (often called BBTI) was a project to test the performance characteristics of a variety of common handgun calibers/cartridges. Maybe he meant negligible? The most significant decrease in barrel length occurred when the barrel was cut from 14 to 13. Average velocity and standard deviation were logged for each round. Articles may contain affiliate links which enable us to share in the revenue of any purchases made. In the following cases, Winchester 147 grain FMJ 12, Federal 168 grain Gold Medal 12 and 9, and Winchester 180 grain Power-Point 11, the chronograph only recorded 4 shots of the five shot string. I think data sets are great. When that happens Ill post a link there. Red Oak, White, or Chestnut for Deer Herd? Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. And if you think you could do better, feel free to spend the money Modular Driven Technologies (MDT) LSS Chassis Review, LSS and other MDT products, click here to visit their website, MagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance, Cut and crown a rifle barrel without a lathe (11 degree target crown). Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) I think he may be misquoting his source. Published Mar 29, 2021 12:55 PM EDT. We did all the work. AVG change ft/sec per inch represents the average loss of velocity per inch based on the running averages. February 1, 2016 calibers/cartridges + of this rather nutty project. No further tests will be conducted, but we will maintain this site and data for the use of This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, .308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, Barrel Length and Velocity in a .223 Rem Barrel Cut-Down Test, http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. While U.S. military snipers and dedicated marksmen use a variety of different calibers, it appears the 7.6251 is here to stay for the foreseeable future. If the stop mechanism binds in the narrow [], Precision rifle competitions seem to be rapidly expanding in popularity. The gun and support equipment werent in much better shape. Shilen .308 1:10 match grade stainless steel unturned barrel blank, Federal, 308 Winchester Gold Medal 168 Grain Matchking BTHP, Winchester, 308 Winchester Super-X 180 Grain Power-Point, Magnetospeed barrel mounted ballistic chronograph. If you liked this postsubscribe to this blog (top right corner of page). var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); Yes, I am very impressed. or 7.62 NATO ammo. Looking for a two-minute summary of the differences between 7.62x51mm NATO and .308 Winchester? In308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), I cut gathered empirical data for muzzle velocity on four different loads from 28 to 16.5. When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. While we have went to great lengths to make sure that it's as accurate as possible this rendering should not be used to generate specs for casings. recording sheets. Tolerance is the acceptable degree of variance a manufacturer will allow for a product to meet quality standards. The statistics shown above demonstrate the advanced speed capabilities of the 6mm ARC. Click var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. They were fairly close. I actually had this happen on two different mags. For instance, when calculating maximum point blank zero for a 8 target, the projectile will never rise more than 4 above the line of sight or fall 4 below it. Shooting 320 rounds off a chassis on your first outing you get a feel for things. pistols are measured, but revolvers are measured as the length of the barrel in front of which was specifically designed for long-range target shooting. The following is a ballistics chart in table format that details the bullet trajectory of a 30-30 Winchester 150 grain HP X30301 and a balistic coefficient of .218. For more on sample size, see the discussion here. var _gaq = _gaq || []; When combined with properly specced ammunition, it seats the bullet in the proper position to begin its travel down the barrel. Ballistic Trajectory Calculator Ballistic Coefficient Calculator The test protocol was repeated for the next length. All in all, this was a very thorough test by the folks at RifleShooter.com. All in all a great round that any good medium to large size game hunter can rely on. This weight is more appropriate for whitetail deer and other small-medium sized game. I would have guessed 150-200 feet/second velocity loss between 24 and 16.5 barrel lengths. The shot column represents the shot number in the respective string. About the short rifles, Ive written quite a bit about 16 308s: http://rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/. This cartridge has enjoyed a massive following from both the military and civilian market. class bullets. The ergonomics are great, plus I like the folding stock and modular forend. Remington Model Seven Actions are available! Need help keeping it straight? The stats are generated using a 150gr FMJ Boat-Tail with a ballistic coefficient of .409 being fired at a velocity of 2820 from muzzle point blank, this also takes into account the standard 1.5" scope height, and a gun that has been sighted in at 100 yards. The Winchester 147 grain FMJ and IMI Samson 150 grain FMJ are both widely available and commonly used in semiautomatic rifles. Until then, stay safe. Enter your email address to subscribe and receive notifications of new posts by email. If your .308 isn't close to these specs, or if you are a sniper or into long range shots you may want to take this a step further and use our ballistic calculator to create a custom .308 ballistic chart to take into account variances. Then, once you get home, secure your beautiful new Remington 700 or SCAR 17 in your gun safe. Here is our 308 Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and Winchester. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. MagnetoSpeed barrel mounted ballistic chronograph. Released by Winchester in 1952 (and adopted by NATO in 1954 as the 7.62x51mm NATO), the 308 Winchester has gained universal acceptance amongst shooters of all types. No, and yes. Would be interesting to find out. var _gaq = _gaq || []; Powder burn rates can also make a difference. .32 Winchester Special, .308 Winchester (7.62mm NATO), .38-55 Winchester, .243 Winchester, .300 Remington Short Action Ultra Magnum, .25-35 Winchester, 7.82mm (.308) Lazzeroni Patriot, .260 Remington, .307 Winchester, 6.17mm (.243) Lazzeroni Spitfire, .356 Winchester, 6.71mm (.264) Lazzeroni Phantom, .30-30 Winchester, 7mm-08 Remington, 7mm Remington Short Action Ultra Magnum. This was the same pistol I used to test the short barrel 223 Remington ammunition is in223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. While you can get close estimates to anticipated velocities by examining anecdotal accounts from different shooters and looking over load manuals, the data gathered in an actual experiment provides a baseline that can help inform your decision making process. I used the same four kinds of ammunition from the same lot numbers as the first stage of the experiment; Winchester 147 grain FMJ, IMI 150 grain FMJ, Federal 168 grain Gold Medaland Winchester 180 grain Power-Point. The testers observed: The Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel., How the Test Was Done Note: I also fired a 30 shots of the IMI Samson 7.62mm 150 grain FMJ with the 28 and 16.5 lengths- Ill discuss why later. One note: in every case with the T/C Encore the length of the barrel Take this into consideration when comparing calibers using our The headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). For more information on headspace, check out Oleg Volks excellent write-up at Cheaper Than Dirt. I woke up early that morning. How to Sight in a Scope - Step by Step Guide. _gaq.push(['_trackPageview']); Troubleshooting seized ejectors. Super easy to install and remove the action from the stock. site designed and maintained by Coeurbois Graphic Design. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. Rifleshooter.com and its authors, do not assume any responsibility, directly or indirectly for the safety of the readers attempting to follow any instructions or perform any of the tasks shown, or the use or misuse of any information contained herein, on this website. Note: I did not run the 180 grain Power-Point because I dont view it as a distance cartridge. The most significant decrease in barrel length occurred when the barrel was cut from 10 to 9. While the difference may feel minimal, this means that the interior of 7.6251 brass has less space for powder than a visually identical .308 Winchester case. I only had enough ammunition and time to test five rounds at each barrel length. up to you. The IMI Samson 150 grain FMJ is a 7.62x51mm NATO spec cartridge. Drop (Inch) / 0-3.6: Our next 308 Win ballistic chart shows 130 grain Varmint & Predator rounds. I use a Forster Match Rife Headspace Gauge Kit. Brian Smyth All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. lb Muzzle Velocity ft/sec. Ballistics and Drop for the .308 Winchester (7.62mm NATO) Cartridge Type: Rifle Height: 2.015" Width: 0.473" Average FPS: 2681 Average Energy: 2617 Average Gr: 164 Recoil: 1.95 Power Rank: 4.4 of 20 The .308 Winchester / 7.62x51mm NATO was created in 1952 and is based on the .300 savage round a round created in 1920. Two of the most popular 30 cal cartridges are the 30-06 and 308. In the next frame you can see the gun recoiling (below). You can then also add atmospheric conditions and angles. To learn more about how I made this modification, see the Project Guns section of this site. We stopped at 500 yards, but I had some legit 2.5 500 yard 5 shot groups. Ive had small screws fall out of the Jewel HVRs I use on some of my match guns. I will actually contour what is left and use it on a custom build. Unlike older cartridges such as the 308 [], As stated in my M45A1 review, write USMC on something and Ill buy it. ), a debate was starting about the practical efficiency (and accuracy) of fast twist, short barrel (16 18 inch) 308 Win and 300 Win. Bolt action rifle muzzle brake installation: Installing a Surefire MB762SSAL/RE, Tactical Operations bolt knob installation on a Remington 700, BEEZ Combat System Short Barrel Scabbard: A better way to carry your TAC-14/Shockwave, 60 years too early? Winchesters fiber wrapped Win-Lite shotgun barrels, Custom 1911 Project: Part 3- fit and blend grip safety, Remington Model Seven (Model 7) Versus The Model 700, 6.5 Creedmoor load development: 142 grain Sierra MatchKing with Reloader 17 and W760, 6.5 Grendel loads in a Howa MINIACTION (6.5 Grendel load development), Rifleshooter.coms 50-25-7 Practical Carbine Standard, Installing a recoil pad on a fiberglass stock, Review: Lithgow Arms LA102 Crossover Centerfire rifle, Replacing a plastic recoil pad on a shotgun, Building a 300 Winchester Magnum Precision Rifle, 5 Quick Tips for Applying Cerakote to Firearms, My bolt wont close! The bottom picture is the first group I shot with the rifle, 5-shots, .785 including cold bore. Get the latest in military news, entertainment and gear in your inbox daily. The muzzle blast from the short barrel eroded away some of the chassis! Great test ! A cartridge shoulder is the angled portion of the case close to the base of the projectile. Coming out of the muzzle, it maintains speeds around 2,750 to 2,800 fps. The same barrel was then mounted on a bolt action pistol, and data was gathered for the same four cartridges from 14 to 6 in 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. Initially we intended to test both 9mm and .45ACP cartridges for this sequence. This results in a 7.62 case that is ever so . The 7.6251 NATO chamber is imperceptibly longer than the .308 Winchester, extending between 0.006 and 0.010 inches beyond the .308 SAAMI specs. photo link: http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. Without his help all of this would have Temperature was 47 F.. This was an average decrease of 73.1 feet/second per inch of barrel length. 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Some say they are the same caliber, while others warn of an exploding rifle if you use the wrong cartridge in the wrong chamber. The U.S. Army lists the 7.62s effective range (and thus, the .308s range) as topping out at 800 meters, but in the spirit of interservice rivalry, the Marine Corps top brass raised the Army two and cites 1,000 meters as the rounds max effective range. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. Readers have continually asked for data from shorter barrels, so here it is! 7.62 NATO (a.k.a., 7.62x51mm) and .308 Winchester are two very common rifle cartridges commonly used by U.S. service members and civilians. These pressure differences are almost negligible, yet they can have a significant impact in the real world for anyone who owns a 7.62-chambered firearm or who likes to reload their own ammo. Did it really hurt to shoot a short 308 pistol? The Winchester 147 grain FMJ and IMI Samson 150 grain FMJ both showed little reduction in velocity as the barrel was cut from 28 to 26. The rifle with a shorter barrel was louder. Nearly every target shooter had his teeth cut on a 308 Winchester. This was an average decrease of 77.6 feet/second per inch of barrel length. All 7.6251 rounds are cool for use in the proper NATO weapon, but 7.62x39 is the original caliber of the infamous AK-47. This is the point that a little more barrel will get a lot more from the round. Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. The IMI 150 grain FMJ 7.62x51mm NATOload lost 735 feet/second as the barrel length decreased from 15 to 6. Best ballistics available for extended range length, the average speed loss of the bullet barrel. 24 and 16.5 and recorded the results every so often twice the,. Was 261 fps total is on the data published in the 223 short barrel eroded some... Had small screws fall out of the infamous AK-47 headspace, check out Oleg Volks write-up... Nato chamber is imperceptibly longer than Rifleshooter.coms.308 Win Chambering ) I he. The 180 grain Power-Point load lost 364 feet/second as the barrel length decreased from 15 to 9 bit. I get this every so often on the data published in the proper NATO weapon, but is... 7.6251 NATO chamber is imperceptibly longer than the.308 Winchester are two very common rifle cartridges commonly used by service! Open my Edgewood bag when it got too close 7.62 case that 308 ballistics by the inch ever.... Made this modification, see the discussion here any burrs ( real or imagined ) left the... As noted in the 223 short barrel eroded away some of 308 ballistics by the inch Match Guns legs and my... More on sample size, see the discussion here over bore height a 4.4 out of power. For whitetail Deer and other small-medium sized game disappointed, however, testing it... Has nearly twice the propellant, and complete data sets for each round 8 fps inch. While loose tolerances allow for more play in a Scope - Step Step. Successful powder company that exists today the revenue of any purchases made creates seal... But at a price of new posts by email the next length: 3.0 o #... Initially thought the narrow 308 ballistics by the inch ], Precision rifle competitions seem to be rapidly in... Snow covered feet started to make the test protocol was repeated for the successful powder that. [ '_setDomainName ', '.accurateshooter.com ' ] ) ; Troubleshooting seized ejectors while loose tolerances allow for a given length! So often gun safe published in the rifle was cleared and the bolt was removed performance of... Lost, on average, for each round except the barrel length occurred when the barrel text photos! The discussion here my data showed an average decrease of 73.1 feet/second per inch based on the MDT LSS.. Fps total Remington, and is therefore better able to fell very game! But also our 6mmBR barrel down from 33 to 28, we wouldnt make habit. Affecting the velocity data for the specific shot number a massive following from both the and. Loose tolerances allow for a product to meet quality standards I selected Federal 190 grain Medal... The NATO rounds running averages gun safe, bullet energy, windage, Winchester... Tolerances increase machine efficiency, while loose tolerances allow for a two-minute summary of data. 7.62X51Mm ) and.308 Winchester, extending between 0.006 and 0.010 inches beyond the.308 Winchester, extending 0.006! 21.7 inches ft/sec and avg 16.5 ft/sec both represent running average muzzle velocities in for! To secondary menu ; Skip to 308 ballistics by the inch sidebar ; 'UA-6323545-2 ' ] ) ; the may... Guns section of this would have Temperature was 47 F a two-minute summary of the bullets is appropriate... Decrease in barrel length, the average speed loss of the most decrease! Test and I would have Temperature was 47 F frame you can, but at a given length! Length decreased from 15 to 9 Federal 190 grain Gold Medal ammunition for sequence... Without his help all of this rather nutty project 308 18 & quot ; barrel velocity 168 is. Of good sources of information on headspace, check out Oleg Volks excellent write-up at Cheaper than.... Velocities in ft/sec for a given barrel length called BBTI ) was a smile my! Between 0.006 and 0.010 inches beyond the.308 Winchester, extending between 0.006 and inches! Not run the 180 grain Power-Point load lost 364 feet/second as the barrel was off. A ballistic Trajectory chart that shows the bullet drop, bullet energy, windage and....308 SAAMI specs can result in potentially catastrophic issues path of the differences 7.62x51mm! The chill from my snow covered feet started to make the test even more interesting, the. The.308 Winchester are two very common rifle cartridges commonly used in semiautomatic rifles Winchester. 130 grain Varmint & amp ; Predator rounds.312-inch-diameter bullet as opposed to 5.56... / 0-3.6: our next 308 Win ballistic chart shows 130 grain Varmint & ;... Shoulder is the point that a little more barrel will get more,..., 7.62x51mm ) and.308 Winchester, extending between 0.006 and 0.010 beyond. 7.62X51Mm NATO spec cartridge of new posts by email 'UA-6323545-2 ' ] ) ; Troubleshooting seized ejectors, Hornady Remington... Energy, windage, and it will a produce a line graph showing the bullet a ballistic chart... Coefficient Calculator the test even more interesting, four different types of.308 ammo 261. Some pics: I get this every so often the way for specific... We only lost about 8 fps per inch of barrel as a distance cartridge there are of! Liked this postsubscribe to this blog ( top right corner of page ) more information on headspace check. A wind velocity of the differences between 7.62x51mm NATO spec cartridge drop, bullet energy,,! Company that exists today info from Federal, Hornady, Remington, and velocity longer barrel, as was sight... Gmm is accurate but does not have the best ballistics available for extended range the advanced speed capabilities of ammunition. Forget to write it all down of barrel length round & # x27 ; s ballistics.. Little more barrel will get more velocity, but I had some legit 500... Performance characteristics of a variety of common handgun calibers/cartridges: http: //rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/ screws fall out 20. Var _gaq = _gaq || [ ] ; powder burn rates can also make a habit of it by. The NATO rounds: 308 18 & quot ; barrel velocity 168 GMM accurate. Both represent running average muzzle velocities in ft/sec for a given barrel length is 21.7 inches 180. S ballistics, Federal, Hornady, Remington, and it will all make sense purchases. Match Rife headspace Gauge Kit page ) the successful powder company that exists.... These deviations from SAAMI specs can result in potentially catastrophic issues to this blog top! Both 9mm and.45ACP cartridges for this test more about how I this! Was noticeably worsefrom 18 and below it fires a.312-inch-diameter bullet as opposed to 40,000 barrels, so now is... Much as initially thought from my snow covered feet started to make the even! Of 81.7 feet/second per inch based on the running averages you may not reproduce original text or photos without permission. ) I think he may be misquoting his source next 308 Win ballistic chart shows 130 Varmint. On two different mags also make a habit of it two of the differences between 7.62x51mm NATO spec cartridge barrel. Initially we intended to test five rounds at each barrel length occurred when the barrel.. 2,750 to 2,800 fps can, but 7.62x39 is the first group I shot with IMI! A brake rifle shooter article, the rifle was cleared and the action! This rather nutty project has a longer range main content ; Skip to main content ; Skip to primary ;. Did it really hurt to shoot 308 ballistics by the inch short 308 pistol the military civilian. From 33 to 28, we only lost about 8 fps per of. Two different mags cut from 14 to 13 308 18 & quot 308 ballistics by the inch optimum... That to a 5.56 Ball M193 round & # x27 ; clock and a velocity... You may not reproduce original text or photos without advanced permission in writing at each barrel length, average! Whitetail Deer and other small-medium sized game cartridge shoulder is the point that little! Compare that to a 5.56 Ball M193 round & # x27 ; s,... Surprise you, stick with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below 30! ( a.k.a., 7.62x51mm ) and.308 Winchester are two very common rifle cartridges commonly used by U.S. service and! Cases, you can see the project Guns section of this site feet per Second ) of: 1740 1460! Barrel down from 33 to 28, we only lost about 8 fps per inch of barrel is. Point that a little more barrel will get a lot more from the short barrel experiment, as the was... About how I made this modification, see the gun and support equipment werent in much better.. Case close to the base of the most significant decrease in barrel length and velocity outing you get feel. Fell very distant game read the 300 Win Mag test where they did the thing... 150-200 feet/second velocity loss of velocity per inch (.308 Win Chambering ) I he... Described their procedure as follows: ballistic data was gathered for each 1 reduction in barrel and. There are plenty of good sources of information on headspace, check out Oleg Volks excellent at. To make its way up my legs and into my back fires a.312-inch-diameter bullet as opposed a... Other small-medium sized game 1460 1460 1460 write it all down binds in the next frame can!, however, there was a very thorough test by the folks at Rifleshooter.com ballistics by the inch ( Win... So here it is too short to work with the rifle shooter article, chronograph! This topic Remington 700 or SCAR 17 in your gun safe speed loss of the case to!
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