Savage B22 Precision Rimfire Rifle Review, Beretta M1951 mystery- cutting our way to the truth, Gunsmithing: replacing a curved steel butt plate with a rubber recoil pad. OTM Match Grade Rifle Ammunition, My bolt won’t close! Quite unexpectedly the new cartridge featured a much longer case than the .338, as long as could be housed in a Winchester long action, in order to achieve optimum velocities. The test protocol was simple. Review: Shooting the MAGPUL Ruger 10/22 Hunter X-22 Stock, Bipod rail installation (Atlas bipod adapter), How to remove a stuck case from a sizing die. [27] However, by the time Winchester got around to designing their own .300, the .308 Norma Magnum and the .30-338 were already on the scene. Both black bears[14] and grizzly bears[15] are hunted using the cartridge. The .300 Winchester Magnum was designed with a neck which is shorter than the diameter of its bullet. The .300 Win Mag is based off the parent case .375 H&H Magnum with a belted largerifle magnum primer. Custom Remington 700 16.5″ 300 Winchester Magnum follow up, Blueprinting, or truing a rifle action ensures the receiver face, threads, lugs, bolt lugs and bolt face are square to the center line of the receiver. Weight (lbs) Remington 88.0 grains of H2O (5.70 ml) This caused the cartridge to have a neck shorter than the diameter of the bullet. --> Get your 300 Winchester Magnum Ammo from our friends at AmmunitionToGo.com <--: … Cartridge Type: RifleHeight: 2.62\"Width: 0.532\"Average FPS: 3026Average Energy: 3517Average Gr: 173Recoil: 2.39Power Rank: 5.23 of 20 The .300 Winchester Mag (.300 Win Mag) was designed in 1963 by Winchester Repeating ArmsCompany. The 300 Win Mag’s short case neck is not detrimental to accuracy, and it is actually capable of near bench-rest like groups with the proper load in a high quality rifle. I developed a mild headache from the 50 rounds of ammunition I shot, despite wearing both ear plugs and muffs. Sorry, your blog cannot share posts by email. The initial barrel length was 24.25 inches. In some cases, the point of impact was unchanged. The maximum point blank range for the 9.7 g (150 gr) bullet is 291 metres (318 yd) yards when zeroed at 250 metres (270 yd). Also, many rifles available today now have effective recoil attenuating features built into them, such as muzzle compensators and energy absorbing stocks and butt-pads, that can significantly lessen recoil as it is felt by the shooter. I selected Federal 190 grain Gold Medal ammunition for this test. Sub 1 minute-of-angle (MOA) accuracy out to 1,000 yards (910 m) is not unusual in precision-built rifles firing match-grade ammunition. Accuracy International AICS-AX 2.0 Chassis System Review: Initial Thoughts, Does size matter? Several companies, among them HS precision, Kimber and Remington manufacture rifles chambered for the .300 Winchester Magnum specifically targeted at law enforcement agencies. Discussing the methodology with friends, I originally envisioned stopping around 20″, cutting off the chamber end of the barrel and using it for a 308. This created the much criticized short neck of the .300 Winchester Magnum. The test protocol was simple. There has been some speculation that if the cartridge was released earlier, the dimensions of the cartridge would have matched the .30-338 Winchester wildcat cartridge. The .300 Winchester Magnum is well-suited for 95% of the world's game. 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. Each reduction in barrel length averaged 39.6 ft/sec in velocity loss. The .300 Winchester uses the same case head design of the .375 H&H Magnum, its parent cartridge. 308 Winchester 7.62x51 18" Barrel 7.62x51 20" Barrel 30-06 Springfield 300 PRC (NEW) 30-378 Weatherby; 300 H&H Magnum 300 Remington Short Action Utlra Mag 300 Norma Magnum (NEW) 300 Winchester Magnum (NEW) 300 WSM 300 Weatherby Magnum 300 Remington Ultra Magnum (NEW) Jewell Trigger, Spuhr Mount with Schmidt-Bender PMII 5-25x56 Illuminated P4 Fine. 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? Troubleshooting seized ejectors. The SAAMI Maximum Average Pressure (MAP) for this cartridge is 441.3 MPa (64,000 psi) piezo pressure (54,000 CUP). Increase your rifle's performance up to 200 fps without extra chamber pressure, recoil, muzzle blast, temperature sensitivity, fouling, or loss of accuracy. Enter your email address to subscribe and receive notifications of new posts by email. Bill Marr Prior to the design of the .300 Winchester Magnum there were several cartridges that provided what could be best described as a magnum level of energy. The maximum point blank zero, allows a shooter to sight in his weapon at a given distance to hit a target of a given size when hold center mass. It moves them at 3180 fps. Since the 300 Winchester Magnum is a popular hunting cartridge, I also worked out the maximum point-blank zero for each barrel length with the given load assuming a 8″ vital area on deer sized game. The .300 Win Mag sees use in long-range benchrest shooting competitions and has been adopted by law enforcement marksmen and by a few specific branches of the U.S. Military for use by snipers. [13], The .300 Winchester Magnum cartridge is very effective on dangerous class 3 game such as bear. If you are interested in more formal analysis of how barrel length affects velocity, take a look at Ballistics by the Inch. There is overlap between the rounds of the different cartridges, and this trend continues through the entire 500-yard range, but we do see an average higher velocity for the .300 WM over the .30-06. slugs. The lengthening of the case and the move of the shoulder forward over the .338 Winchester Magnum allowed for the reaming of the .308 Norma Magnum or .30-338 Winchester chamber to dimensions of the .300 Winchester Magnum. In this article, we will start with a new Remington 700 short […], Introduction I cut back a 28″ barrel 308 Winchester one inch at a time, to 16.5″, and recorded velocity data for four different cartridges. Both the .300 Win Mag and 7mm Rem Mag have specific rounds that show a much higher velocity and also rounds that fall lower on the graph. Significant jumps in velocity reduction occurred between 18.25 and 16.25 inches (56, 65 ft/sec) and between 23.25 and 22.25 inches (65 ft/sec). The .300 Winchester Magnum is powerful enough to hunt any North American game animal. I’m going to install a brake, crown the barrel the right way and be the proud owner of a 16.25 inch 300 Winchester Magnum barrel… I’m unsure I’ll shoot it much, if at all, but at least I can definitively tell someone what happens when you cut your 300 Winchester Magnum to 16.25 inches. Does red dot brightness (and bloom) change point of impact? SAAMI recommends a bore diameter of 7.6 millimetres (0.300 in) and a groove diameter of 7.8 millimetres (0.308 in). In C.I.P. The goal of this article is to help you determine which .300 Win Mag Rifle is best for you. Best .300 Win Mag Rifles Comparison 2020. Norma 95.5 grains of H2O (6.19 ml), .300 Winchester Magnum SAAMI cartridge dimensions. The maximum point blank range for the 12 g (180 gr) bullet is 300 yards when zeroed at 232 metres (254 yd). Beginning with the .270 Weatherby Magnum in 1943, Roy Weatherby introduced a line of cartridges that while based on the Magnum H&H case were shortened to fit a standard length (2.5 in [63.50 mm]) action. So, what does this mean downrange? To help differentiate it from the other .300 magnums, and to allow for the chambers of the standard length .300 magnums to be rebored to the .300 Winchester Magnum chamber dimensions, Winchester moved the shoulder forward and lengthened the cartridge slightly. According to the official C.I.P. The amount of recoil the cartridge generates is a step up from the non-magnum .30 caliber (7.62 mm) cartridges. We headed to the range with a 300 Winchester Magnum, a chronograph and my hacksaw. If Winchester had released the cartridge prior to 1960, the cartridge would have been similar to the .30-338 Winchester wildcat cartridge. So, the.300 Win Mag is slightly more powerful, has a slightly flatter trajectory, and has somewhat more recoil than the.30-06. It has the same 2.85-inch case as the.375 H&H, requiring a magnum-length action, but it also has plenty of case capacity. https://en.wikipedia.org/w/index.php?title=.300_Winchester_Magnum&oldid=994984252, Short description is different from Wikidata, Articles with unsourced statements from July 2019, Creative Commons Attribution-ShareAlike License, This page was last edited on 18 December 2020, at 15:58. Keep in mind almost two pounds came off the muzzle end. pressure to certify for sale to consumers. Although the .300 H&H Magnum, .30-338 Winchester Magnum and the .308 Norma Magnum had a head start on the .300 Winchester Magnum these cartridges soon faded into obsolescence. The .300 Win Mag remains the most popular .30 caliber magnum with American hunters, despite being surpassed in performance by the more powerful .300 and .30-378 Weatherby Magnums and the newer .300 Remington Ultra Magnum. This greater recoil can make the .300 Winchester Magnum, despite its inherent accuracy advantages, a harder cartridge to shoot accurately, when compared to non-magnum .30 caliber cartridges such as the .30-06 Springfield or the .308 Winchester. The rifle is fired at 100 yards, from a bipod with a rear bag, for 5-rounds. To put this into perspective, a Boeing 737 commercial airliner travels at a cruising speed of 600 mph, or 880 fps. The popular .30 caliber's omission from that lineup was not missed. Although cartridges such as the .30-378 Weatherby Magnum, .300 Remington Ultra Magnum and the .300 Weatherby Magnum all exceed performance of the .300 Winchester Magnum none of these cartridges can be chambered in a standard length action. Mag. On the other hand, recoil is subjective (some are more sensitive to it than others) and one can get used to it with practice. This ammunition was developed as a .300 Winchester Magnum Match Product Improvement (PIP) and uses the 220 gr (14.26 g) Sierra MatchKing Hollow Point Boat Tail (HPBT) very-low-drag bullet fired at a nominal muzzle velocity of 2,850 ft/s plus or minus 50 ft/s (869 m/s ± 15.2 m/s). 300 Win Mag 200 gr ELD-X® Precision Hunter® Item #82002 | 20/Box . Bullets weighing 9.7–10.7 g (150–165 gr) are adequate for smaller deer such as the mule deer and white-tailed deer. McPherson. Chronograph data was recorded using a MagnettoSpeed V2 barrel mounted ballistic chronograph. The most useful bullet weights for the .300 Winchester Magnum are those weighing between 150–200 grains (9.7–13.0 g). The short, fat 300 WSM, released on an unsuspecting public in the second year of the 21st century, boosts that slightly to 3,010 fps and 3,621 f-p. Bullet weights of 10.7–13.0 grams (165–200 gr) are the preferred choices for these game species. The down side was a neck which was shorter than the caliber of the bullet it fired, which meant that the bullet had to be seated more deeply in the case. So, it begs to question whether or not the new .300 PRC will steal the thunder of the .300 Win. Visit Brownells to accessorize your 300 Winchester Magnum. Krieger Heavy Varmint (fluted) with JEC Custom Brake. and SAAMI dimensional values exist for this cartridge. A Shilen #8 contour chrome-moly barrel had been threaded and chambered on the gun. Mag. Recoil from the .300 Win Mag is noticeably higher than the well-known and popular .30-06 Springfield. Select specific calibers and cartridges by using the filters 2. The .300 Winchester Magnum (also known as .300 Win Mag or 300WM) (7.62×67mmB) is a belted, bottlenecked magnum rifle cartridge that was introduced by Winchester Repeating Arms Company in 1963. is simply one of the most flexible cartridges for North America and African plains game,” Phil says. [22], In January 2014, the U.S. Department of Defense annual testing report found that the older A191 or MK 248 Mod 0 .300 Winchester Magnum service round loaded with aerodynamically less efficient 190 gr (12.32 g) Sierra MatchKing Hollow Point Boat Tail (HPBT) bullets fired from the XM2010 demonstrated adequate performance and lethality. A 165 grain bullet is probably a better choice for the.300 Win. The .300 Weatherby Magnum was introduced in 1944. The rifle is fired at 100 yards, from a bipod with a rear bag, for 5-rounds. I have a Tikka 300 Win Mag and use the Noslar 180 gr Ballistic Tip and Accubond, both run at 2960 fps out of the 24 inch barrel. It is based on the .375 H&H Magnum, which has been blown out, shortened, and necked down to accept a .30 caliber (7.62 mm) bullet. Winchester's factory load gives a 165 grain Fail Safe bullet a MV of 3120 fps and ME of 3567 ft. lbs. Almost no divergence between C.I.P. [citation needed]. The ammunition standards organizations SAAMI (Sporting Arms and Ammunition Manufacturers' Institute) and C.I.P. The .300 Winchester Magnum is a magnum cartridge designed to fit in a standard rifle action. SAAMI recommended a six-groove barrel with each groove being 2.8 millimetres (0.110 in) wide. Mag. Lets take a look at drop and drift at 1,000 yards (the internet’s favorite distance) for each length barrel. Hover over graphs and lines to see more d… For four ammunition manufacturers the cartridge case capacities are provided as: All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized. No other accurizing work has been performed. Mag. [7], The .300 Winchester Magnum's high availability in popular rifles such as Winchester's Model 70 and Remington Model 700 made the cartridge a popular choice among the shooting public. Ambient lighting was poor, we were barely able to read printed material from the firing line beneath overhead cover and it was 11 o’clock in the morning. Recoil and muzzle blast increased significantly when the barrel reached 20.25 inches in length and again below 18.25 inches. Its recoil is about 30% greater than that of the .30-06 Springfield,[11] which is known as a 'stout' cartridge. 300 Win Mag. The .300 Winchester Magnum is powerful enough to hunt any North American game animal. is known for—and it’s more than enough to kill a whitetail at 150 yards, and without punishing a smaller person. The taper of the cartridge was reduced to provide the cartridge with more volume so as to increase its potential powder capacity. While the Federal Gold Medal 190 grain ammunition from the 16.25 inch barrel has a flight path 100 inches lower then the 24.25 inch barrel, the effects of a full value wind are less significant. For our rounds, we see a slight difference in muzzle velocity with the .300 Win Mag. This is the first day the gun will be fired. It’s time to see what happens to the same gun, under the same conditions, as the barrel is set back one inch at a time. This was unexpected, but the target confirms these similarities with all 10-rounds landing within a 1.799″ inch group (the one fired by the 21.25″ barrel). Initially we (it’s always good to bring a friend with this much cutting) used a cordless Sawzall to make the cuts, after the battery died, we switched to a hacksaw. The ballistic performances based off five grain types for velocity are 3,260 ft/s(1… 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. 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The cornerstones of Hornady ® Precision Hunter ® factory loaded ammunition, including bipod, only... The only ones I have access to for 95 % of the.300 uses...