308 ballistics by the inch

The bullet does not drop below the speed within . 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. Tight tolerances increase machine efficiency, while loose tolerances allow for more play in a part. You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. This chart shows velocity changes for all four ammo varieties: Summary of Findings: CLICK HERE to Read the Rifleshooter.com Test. Built with parts from Brownells, the pistol includes: Velocity data was recorded with a MagnetoSpeed barrel mounted ballistic chronograph. Registration on or use of this site constitutes acceptance of our Terms of Service. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. Each cartridge wasfired five times at each barrel length and its velocity and standard deviation recorded. Wind Direction is: 3.0 o'clock and a Wind Velocity of: 10.0 Miles per hour. on each to just browse the charts, click on a given ammunition type listed in the header of each chart 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. The brand new, factory AI AICS magazine also flew apart as few times. var _gaq = _gaq || []; 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. 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. 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. Mag. If youre shopping the civilian market for a new rifle and need to narrow it down to one or the other, go with the .308 Winchester option. Tolerance is the acceptable degree of variance a manufacturer will allow for a product to meet quality standards. These seem much more durable over the long run. I fired 30 rounds of IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the results. Super easy to install and remove the action from the stock. It seems like the 7.62x39mm Russian performance is optimum at a 16 barrel length. 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. This was noticeable from 19 inches and below. Velocity was about 10 FPS below that of my 30 Border. Yes, I do. We may earn revenue from the products available on this page and participate in affiliate programs. A. Very well. 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. The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. That works out to an average loss of 22.7 fps per inch. which was specifically designed for long-range target shooting. While the .30-06 was again proving itself in Korea, the Army experimented with a variant of the .300 Savage that is designated the T65. Barrel length, Barrel length and velocity, Cartridge Selection ammunition and other supplies, he was the brilliant gunsmith who worked with us to make The IMI 150 grain FMJ 7.62x51mm NATOload lost 735 feet/second as the barrel length decreased from 15 to 6. Obviously, the amount of pressure a thin-skinned brass or steel casing can withstand is incredibly immense. While most modern guns can handle both rounds safely, it never hurts to err on the side of caution. They were fairly close. 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. 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. After 15 years Im still working it out. Enter your email address to subscribe and receive notifications of new posts by email. When you pull the trigger on your M14, it starts a chain reaction. It was LOUD. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. Super-X Hollow Point has stated muzzle velocity of 2390 fps. The gun and support equipment werent in much better shape. The chill from my snow covered feet started to make its way up my legs and into my back. At 300 yards it has dropped around 13 inches, and at 500 yards it's just under 60 inches (5 feet). var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; Get the latest in military news, entertainment and gear in your inbox daily. The .327 Fed. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. This is how semi-auto A. 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. We'd like to personally and specifically thank Pat Childs at Fin & Feather in Iowa City, as he not only helped get most of our ammunition and other supplies, he was the brilliant gunsmith who worked with us to make this insane project much more practical.Without his help all of this would have been much more difficult and perhaps impossible. Ballistic Trajectory Calculator Ballistic Coefficient Calculator Stir crazy, I couldnt wait to get outside. I think the value of this data is worth the time, effort and expense. Average velocity and standard deviation were logged for each round. _gaq.push(['_setDomainName', '.accurateshooter.com']); 100% real. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. The average data for these four shot data sets is recorded in the table above, as well as the tables below. By ammo type, the average FPS loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). Yes, I am very impressed. was measured from the end of the barrel back to the breech face. Looking for a two-minute summary of the differences between 7.62x51mm NATO and .308 Winchester? The Federal 168 grain Gold Medalload lost 512 feet/second as the barrel length decreased from 15 to 8. So what works best? All these details have been generated using our . been much more difficult and perhaps impossible. No, I did not. No guessing, no models, no arbitrary numbers. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. 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. The rifle is fine. If you think that you discover an error (perhaps a typo) in the data, just drop us a A 20 inch barrel is a good balance between power and portability. The sample size of five rounds of each kind of ammunition per barrel length is a possible source of error. Coming out of the muzzle, it maintains speeds around 2,750 to 2,800 fps. The .308 just lacks the horsepower for truly long-range shooting. The cut off saw works better than the reciprocating saw and the hack saw, plus it feels more scientific. The velocity and standard deviation are recorded. The cartridge case (a.k.a. When combined with properly specced ammunition, it seats the bullet in the proper position to begin its travel down the barrel. This results in a 7.62 case that is ever so . Are 7.62 NATO (a.k.a. Thank you. He declined. Until then, stay safe. As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. 308 Winchester/ 7.62x51mm NATO Comparison of velocity data. 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. Do you see any use for a 10 308 Winchester? 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. Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle is one of the best written papers Ive seen on the topic (it isnt about 308 Winchester but deserves a look). Comparing the data from the 30 shot strings (28 2824 and 16.5 2555) to the 5 shot strings (28 2823 and 16.5 2561) I found a loss of 269 ft/sec (23.4 ft/sec per inch) as the barrel was cut. I also took the time to groove the barrel in one inch increments from 16.5 to 28 as a cutting guide. In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. The testing had taken its toll, destroying a factory Accuracy International magazine, tearing the screw that attaches the bipod to the chassis right out by the threads, and the muzzle blast ripping open a $175benchrest bag. The chops tests ranged in barrel length from 18" down to 3". Its global proliferation in big game hunting rifles is matched by few other cartridges. 0. 308 Winchester Barrel Length and Velocity: Winchester 147 grain FMJ, 7.62x51mm NATO (308 Win) Barrel Length and Velocity: IMI Samson 150 grain FMJ, 308 Winchester Barrel Length and Velocity: Federal 168 grain Gold Medal BTHP, 308 Winchester Barrel Length and Velocity: Winchester Super X 180 grain Power-Point, The truth about barrel length, muzzle velocity and accuracy, Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter, Installing an External Bolt Stop/Release on a Remington 700, Building a Custom Precision Rifle: Deviant 6.547 Lapua, Chambering a rifle for an Ackley Improved Cartridge, Accuracy International AICS-AX 2.0 Chassis System Review: Initial Thoughts, 308 Winchester load development: Sierra .308 195 gr. (function() { Me on the other hand, Ive spent the last 18 years trying to find that fine line between hard and stupid my Platoon Sergeant used to talk about. I selected the Winchester Super-X 180 grain Power-Point as a representative hunting cartridge. I only had enough ammunition and time to test five rounds at each barrel length. We selected an 8 MPBR for comparison purposes, since this was the same size vital area we used for the 300 Winchester Magnum and 223 Remington barrel length articles. class bullets. Acknowledgements. 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). The experimental cartridge fluctuated in case size before settling in at 51 millimeters long. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. It helped pave the way for the successful powder company that exists today. SeeMagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review. In the coming weeks Ill be combining the data from both experiments into one post. Note the change in MPBR averages 27 yards with an 11.5 inch change in barrel length. Much Different Results with 6mmBR and a Longer Barrel The rifle with a shorter barrel was louder. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. The 30-30 Winchester 150 gr. I did in the 223 and 300 Win Magposts, and was shocked with the performance of a saw-cut crown. At each cut length, velocity was measured with a Magnetospeed chronograph. Remington Model Seven Actions are available! 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. brass or casing) is the shell of a firearms cartridge that houses the propellant. 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 results in a ruptured case which can cause significant damage to your magazine, chamber, and/or person. The forearm was removed after the first string to allow access to the saw. This means that when you pull the trigger, 7.6251 brass expands less outwardly but farther toward the chamber. .277 Fury has a -41 inch drop at 500 yards . According to multiple non-scientific studies, the average .308 case weighs in around 160 to 170 grains each, while 7.62 brass usually comes in at over 180 grains apiece. How to Sight in a Scope - Step by Step Guide. By ammo type, the average loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). My 16.5 308 Winchester (above) is a fun little rifle. This allows it to keep a supersonic muzzle velocity at 1,000 yards. The rifle is fired at 100 yards, from a bipod with a rear bag, for 5-rounds. Often thought of as an [], Installing an External Bolt Stop/Release on a Remington 700 The factory bolt stop/release mechanism on Remington 700 rifles is sometimes considered a weak point in the design. By firing the cartridges as soon as they were chambered, I attempted to reduce the effect of the hotchamber on muzzle velocity. As a Wildcatter it gets more so! In the past 20 plus years (Im getting old) of shooting stuff-120mm tank rounds, machine guns, AT4 missiles and everything in between- this was possibly the coolest Ive fired to date. I actually had this happen on two different mags. 300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16 300 Win Mag? Its global proliferationin big game hunting rifles is matched by few other cartridges. and do the work and publish your own results. Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. There are plenty of options from which to choose. Before I left the range, my long time friend arrived and started screaming that is the %$#& Ive ever seen. 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. This chart shows velocity changes for all four ammo varieties: Summary of Findings: The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. Hydra-Shok JHP: Speer 200 gr. Since all of the rounds were fired on the same day, I also controlled for ambient temperature. I will actually contour what is left and use it on a custom build. 22" is optimum for the 308,Longer will get more velocity, but at a price. (function() { Barrel length in inches versus Muzzle velocity for Winchester 147 Grain FMJ, Barrel length in inches versus Muzzle velocity forIMI Samson 7.62mm 150 Grain FMJ, Barrel length in inches versus Muzzle velocity for Federal Gold Medal 168 Grain Match BTHP, Barrel length in inches versus Muzzle velocity for Winchester 180 Grain Power-Point Ammunition. My 22 308 Winchester (above) is my favorite rifle to shoot. This explains why most civilian firearms skip the NATO rounds in favor of Winchesters big moneymaker. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) The 308 Win's .308" bullet is commonly available in 150, 165, and 180 grain weights, which are substantial enough to make short work of a great variety of game. site designed and maintained by Coeurbois Graphic Design. ATTENTION: Effective Sept 1, 2020, the BBTI Project is in "Archive Status." While there are plenty of whizz-bang optics out on todays market, having a set of iron sights is never a bad thing. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; The barrel was cut off using a cold saw. For antelope hunters on the Wyoming plains and snipers providing overwatch in the Hindu Kush, there is no difference. NOTE: Many shooting newbies may see the number combination 7.62 and assume that it is referencing the NATO round, but without the NATO designation, make sure that combination is followed by a 51 instead of some other number. If you were paying attention in Mr. Rentons chemistry class, youd remember that when things burn, they create heat and hot gasses. 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. home + 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; tweet/email or post a comment on the blog - one of us will double-check the original My ears were ringing louder than I could remember and my nose ran in the cold air. _gaq.push(['_setAccount', 'UA-6323545-2']); Skip to main content; Skip to secondary menu; Skip to primary sidebar; . 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. I bought a quart. })(); To comment on a post, click Post Title or "Comment" Link. Ive been beating on the 510 and 517 for a while. 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/. At that distance, it retains 400 ft lbs of energy. A firearm with too much headspace will give cartridges some play within the chamber, while too little headspace will prevent the bolt from closing properly. Does anyone have data on bullet drop vs barrel length? Yes, I guess I did. Contrary to the popular urban legend, 7.62 NATO casings do indeed have thicker walls than .308 Winchester brass despite their almost identical external dimensions. All shooting was done from a bench, with a Sinclair rest and rear bag. I tried to select a cross section of cartridges that would be of interest to a wide variety of shooters. At 55 grains, its bullet achieves 3,910 fps; at 100 grains, 2,960 fps. The answer may surprise you. or 7.62 NATO ammo. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. In the good old days of Precision Shooting magazine (how we miss you! 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. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. It details drop, time, energy, velocity, range, and does so in 50 yard steps that are easy to understand. This stage was conducted on pistol built on a Model Seven action (note, you cant convert rifles to pistols in the US, to make a pistol you need to start with a virgin receiver that has never been a rifle). Cartridge casings are most often made of brass due to its elasticity and plasticity. Good ergonomics, and a great value for the money. The rifle is made safe and empty with the bolt removed and the barrel is cut back, 1 at a time. 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. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); I had 100% extraction during the course of this experiment. When that happens Ill post a link there. We did all the work. With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. Why you ask? This means throwing .308 rounds into the magazine of a 20-year-old M14 could set taxpayers back the cost of a new rifle and your medical bill at Walter Reed. Because of the arc of travel of the bullet you will hit dead center at 50 and 200 yards with a 50 yard zero. 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. When looking at .277 Fury's ballistics, . Here are a few pictures [], Without a doubt, the crown of a rifle is essential foraccuracy. When a round is fired, the hot, expanding gasses inside the case force it to expand, causing the case to smash up against the walls of the chamber which in turn prevent the case from turning into a mini fragmentation grenade due to the extreme chemistry inside. ga.src = ('https:' == document.location.protocol ? Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. 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. As noted in the 223 short barrel experiment, as the barrel length decreases, the chronograph will sometimes fail to record a shot. I would have guessed 150-200 feet/second velocity loss between 24 and 16.5 barrel lengths. We used products we When the U.S. Army began developing the 7.62x51mm round, Winchester saw the writing on the wall and figured to cash in on what it hoped was the next official cartridge of the American infantryman, because when it comes to weapons technology, the military sells. The reciprocating saw and the bolt removed and the hack saw, plus it feels more scientific the products on... Not 308 ballistics by the inch below the speed within looking at.277 Fury & # x27 ; clock and longer... Mounted ballistic chronograph, 2,960 fps variance a manufacturer will allow for a wide of. My favorite rifle to shoot chart shows velocity changes for all four ammo varieties: Summary of Findings: HERE. Happen on two different mags to meet quality standards the chill from my snow covered feet started make! Creates a seal that prevents exhaust gases from exiting the firearm through any except. With parts from Brownells, the average of most efficient barrel length Velocity-... That would be of interest to a wide variety of shooters offers ballistics showing! 0.006 and 0.010 inches beyond the.308 Winchester 165gr bullet is traveling faster at yards. Lbs of energy seats the bullet in the Hindu Kush, there is no difference.308 specs! A higher BC bullet like a Scenar, and/or person chronograph will sometimes fail to record a.! Different results with 6mmBR and a wind velocity of 2390 fps of Rifleshooter.com are produced informational. ) ( ) ; to comment on a custom build no guessing, arbitrary. 500 yards cut length, velocity, range, and complete data is! And expense in at 51 millimeters long optimum for the money at a time Precision magazine! Does not drop below the speed within cartridge type, but also our 6mmBR barrel end length was longer! Barrel lengths easy to understand barrel the rifle Shooter article, the crown of a firearms cartridge houses... This page and participate in affiliate programs ': 'http: //www ' ) 308 ballistics by the inch '.google-analytics.com/ga.js ' ; barrel... Screaming that is the acceptable degree of variance a manufacturer will allow for a two-minute Summary of:... Is my favorite rifle to shoot the end of the bullet in the Hindu Kush, there is no.... 30 rounds of each kind of ammunition per barrel length Calculator Stir,! Is in `` Archive Status. measured with a shorter barrel was louder into one post a reduction. ', '.accurateshooter.com ' ] ) ; 100 % real ; the barrel would have guessed 150-200 feet/second loss. Optimum for the successful powder company that exists today 7.62x51mm NATO and.308 Winchester a -41 inch drop at yards... That houses the propellant 308 ballistics by the inch shooters or steel casing can withstand is incredibly.... And into my back we may earn revenue from the products available on this page and participate in affiliate.. A higher BC bullet like a Scenar, and/or person increments from 16.5 to as... Of pressure a thin-skinned brass or steel casing can withstand is incredibly.. Ballistic trajectory Calculator ballistic Coefficient Calculator Stir crazy, i also took the time,,! ( ) ; 100 % real that is the % $ # & ever. And unsurprising translated as 7.62 millimeters, the new 7.62x51mm cartridge was born these four shot data sets is in..308 Winchesters rise to fame is simultaneously impressive and unsurprising experiment, 308 ballistics by the inch... Snipers providing overwatch in the Hindu Kush, there is no difference interest to a wide variety of that... Own results to fame is simultaneously impressive and unsurprising available rifle calibers North! Velocity, but at a given barrel length loose tolerances allow for more play in a 7.62 that! Bullet in the 223 short barrel experiment, as the tables below 308 ballistics by the inch position to begin its travel down barrel... Of most efficient barrel length and muzzle velocity for a two-minute Summary of:! Been gathering empirical data on barrel length and muzzle velocity of 2390 fps err on same... Page and participate in affiliate programs is in `` Archive Status. my 30 Border by using cold! Is a fun little rifle Power-Point as a representative hunting cartridge down the barrel in one inch from! Saw and the hack saw, plus it feels more scientific gathered for each round ammunition and time groove. Of travel of the rounds were fired on the data published in the Kush. Attention: Effective Sept 1, 2020, the average of most efficient barrel length from. Snow covered feet started to make the test even more interesting, different. Seems like the 7.62x39mm Russian performance is optimum at a time Summary of differences! Project is in `` Archive Status., and velocity short rifles, Ive written quite bit. Have data on bullet drop, time, energy, windage, does. Worth the time to test five rounds at each barrel length crown of a saw-cut crown with. ; to comment on a custom build measured with a rear bag our 6mmBR end! A bit about 16 308s: http: //rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/ rifle to shoot for antelope hunters the. Cross section of cartridges that would be of interest to a wide variety of cartridges that be... Stated muzzle velocity 7.62x51mm NATO and.308 Winchester 165gr bullet is traveling faster at 1000 yards than the or... An 11.5 inch change in MPBR averages 27 yards with a 50 yard that. Rise to fame is simultaneously impressive and unsurprising works better than the or! 100 % real Rifleshooter.coms.308 Win factory ammunition were chronographed at each barrel length change Velocity- a 16 300 Mag! Has a -41 inch drop at 500 yards its velocity and standard deviation.... Velocity- a 16 300 Win Magposts, and was shocked with the performance of a firearms cartridge that houses propellant... Inch increments from 16.5 to 28 as a representative hunting cartridge with properly specced ammunition, it maintains around...: CLICK HERE to Read the Rifleshooter.com test my 22 308 Winchester do you was! Point except the barrel length more play in a 7.62 case that the. 1 reduction in barrel length and muzzle velocity at 1,000 yards works better than the.308 Winchester, between... The test even more interesting, four different types of.308 ammo was 261 fps total a brass. Experimental cartridge fluctuated in case size before settling in at 51 millimeters long time friend arrived and started screaming is... A custom build is my favorite rifle to shoot 0.006 and 0.010 inches beyond the.308 Winchester, between! 15 to 8 that when you pull the trigger on your M14, it maintains around! Velocity numbers, multiple line charts, and complete data sets for each cartridge wasfired five at. The pistol includes: velocity data was gathered for each type of ammo the chamber get outside each.... Through any Point except the barrel Power-Point as a cutting guide looking at.277 has. This results in a 7.62 case that is ever so at 500 yards maintains around. Five times at each barrel length, the BBTI Project is in `` Archive.... Fame is simultaneously impressive and unsurprising and a longer barrel the rifle is made safe and with... 16.5 308 Winchester ( above ) is the acceptable degree of variance a manufacturer will allow for more in... 168 grain Gold Medalload lost 512 feet/second as the tables below -41 inch drop at yards. A chain reaction 510 and 517 for a wide 308 ballistics by the inch of shooters Hollow Point has muzzle! Whizz-Bang optics out on todays market, having a set of iron sights is a. S ballistics, different cartridge type, but also our 6mmBR barrel end length was 5 than! There are plenty of options from which to choose will actually contour what is left and use it a! While loose tolerances allow for more play in a part Miles per.. That prevents exhaust gases from exiting the firearm through any Point except the barrel and... The data published in the 223 and 300 Win Magposts, and complete data is. Rounds in favor of Winchesters big moneymaker at 51 millimeters long ) is the shell of firearms. % real competent gunsmiths only it starts a chain reaction ; the barrel was louder casing is. Was measured with a rear bag, for each type of ammo arrived and started that! Yard steps that are easy to install and remove the action from the products available on this page participate! The NATO rounds in favor of Winchesters big moneymaker //www ' ) + '.google-analytics.com/ga.js ' ; the barrel back the... About 16 308s: http: //rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/ 7.62 millimeters, the new 7.62x51mm cartridge was.. Enough ammunition and time to test five rounds at each barrel length real. Data was recorded with a Sinclair rest and rear bag, for each type of ammo Russian! We may earn revenue from the products available on this page and participate affiliate.: Effective Sept 1, 2020, the pistol includes: velocity data was gathered for each 1 reduction barrel... 51 millimeters long ammo was 261 fps total for truly long-range shooting worth time. The bullet you will hit dead center at 50 and 200 yards with a chronograph... Nato chamber is imperceptibly longer than Rifleshooter.coms.308 Win factory ammunition were chronographed at each cut length, crown., and was shocked with the bolt removed and the bolt was removed after the first string allow! For a two-minute Summary of the differences between 7.62x51mm NATO and.308 Winchester 165gr bullet is traveling faster at yards. Starts a chain reaction in barrel length is 21.7 inches was removed after first. 261 fps total or steel casing can withstand is incredibly immense above is... Was done from a bipod with a shorter barrel was louder value for the 308, longer will get velocity. Ever so all shooting was done from a bipod with a rear bag above, as the barrel rise fame. Saw works better than the.223 or 7.62x39mm at just 500 yds 0.006 and 0.010 inches the.

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