I am in the process of building a 338-7mmwsm. Like the other .300 magnums, the .300 WSM is fully capable of taking the full range of North American big game—though I personally feel there are better tools for the brown bear and bison—and any African plains game species at all, as well as being just about perfect for leopard, and will handle lion in a pinch. We tested three Speer Hot-Cor Spitzers (150, 165, and 180 grains) plus the 165-grain Trophy Bonded Bear Claw, available as a component then. Mag, 300 Win. The WSM also posted a maximum average velocity only 49 fps less than its bigger, older brother using 14 grains less propellant. Mag., 300 Wby., etc., I don’t see this as a significant problem. All of the WSM cartridges released to date have proven popular for thin-skinned game up to the size of elk and African plains game, the .325 WSM being an excellent cartridge for elk, bison and similar big game.. Flex in the action can result in slight bending of the bolt/breech lock-up and alignment of the cartridge in the chamber. While there are few game animals which could ever tell the difference between the two, many shooters appreciate the higher velocity figures. Small Game – The Accommodating Cottontail, 300 WSM Snake Oil Blog - Ron Spomer Outdoors, Twin Practice Rifle Saves Money - Ron Spomer Outdoors. Winchester's high quality, durable brass can be reloaded several times. If “efficiency” is getting the most output from the least input, Jamison’s concept seems to be working. There are factory loads specifically designed for taking deer—Hornady’s American Whitetail load drives a 165-grain InterLock cup-and-core bullet to 3130 fps—but like the .300 Winchester, the magnum velocity can make a mess of things, leaving a bunch of blood-shot meat. ISS Prop House gives us the rundown on the guns used in Enemy at the Gate. 6.5mm Grendel.22 PPC.30 Walker Mag., most of the Weatherby Magnums and more. I’ve spun enough ink regarding my reloading concerns with belted cases that don’t need a belt, so I’ll not repeat myself here. Repeating Arms Company used the same concept and the same base case in creating its even shorter Winchester Super Short Magnum cartridges, three of which were introduced in 2003 and 2004. You’re seeing this ad based on the product’s relevance to your search query. The .300 WSM has proven to be wonderfully accurate in a well-tuned rifle, and when things are built properly it truly is the equal of the .300 Winchester Magnum; it just requires more attention to make sure the cartridge feeds properly. I did this once when switching from a 7mm-08 Rem. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. The ability to utilize these high velocity factory loads without having to hand load was one aspect of appeal to hunters who adopted the .300 WSM. Or so goes the advertising hype. This website contains advertisements. Supposedly it is easier to get a precise alignment of the case/bullet with the bore if the headspacing is at the shoulder. And, if you handload, you can minimally resize once-fired 300 Win. That’s no bargain. I guess that means the powder burns hotter or more completely with fewer unburned kernels blown out the muzzle. This is probably because the 300 Win. cases to headspace on the shoulder anyway. If you already have a 300 Win. If its back at the belt, the cartridge could cant slightly to misalign the bullet with bore. Looks like you get "almost" 6 or 6.5 … How much time is saved when bolting in a short-action follow-up shot? Repeating Arms Company was the first major manufacturer to commercialize Lazzeroni's concept, followed shortly thereafter by Remingtonwith their "Short Action Ultr… On the other hand, the .300 WSM uses only 14 percent more fuel than the .30-06 to get an 11 percent velocity gain, a reasonable return. Which gives you, the patron, more of the information and entertainment you enjoy. Another influence was a series of 6 mm cartridges developed for bench-rest target shooting competitions in the 1970s. Shooters have been complaining about the belt around the head of belted magnum cases for at least 30 years. The 300 WSM (and most other rimless, bottlenecked cartridges) headspaces via the shoulder contacting the corresponding slope near the front of the chamber. The stiffness inherent in a shorter action can contribute to accuracy because it reduces vibrations and flexing. We used the propellants available to us prior to the release of the Speer Reloading Manual #14 in 2007. How is the 325 brass quality wise? Privacy Policy   •   Contact Us   •   Warnings   •   FAQs   •  © 2020 National Rifle Association of America, Remington Model 700 American Hunter Rifle Project, Women On Target® Instructional Shooting Clinics, Volunteer At The Great American Outdoor Show, Marion P. Hammer Women Of Distinction Award, Women's Wildlife Management / Conservation Scholarship, National Youth Shooting Sports Ambassadors, NRA Outstanding Achievement Youth Award Presented by Brownells, National Youth Shooting Sports Cooperative Program, Head to Head: 6.5 Creedmoor vs. 7mm-08 Remington, #SundayGunday: Henry H009 Lever Action .30-30, Head to Head: 7x57mm Mauser vs. .280 Remington, 2020 National Rifle Association of America. The Delta L problem article explains this problem in more detail. Always exercise due diligence before purchasing any product or service. I did say use the .325 WSM instead of a wild cat but I did not realise you already had a .338 barrel to work with. Shows excellent linear tracking of pressure against charge weight in bullet weights from 110 to 200 grains. All Shooting Times subscribers now have digital access to their magazine content. Brass for the .300 WSM was designed to withstand much higher pressures than traditional belted magnums, enabling the small case to either duplicate or surpass .300 Winchester Magnum factory loads. For a better experience, please enable JavaScript in your browser before proceeding. The Husqvarna AB. I'm pretty sure I have been told that the 300WSM has a longer neck than the 7WSM. With some smaller caliber cases you may notice the case mouths to be slightly belled. Nonetheless, the cartridge is a unique design, intended to duplicate the ballistics of the venerated .300 Winchester Magnum, released in 1963. All use the H&H.532-inch diameter head and.511-inch diameter body. We also developed reduced-recoil loads using Accurate 5744 that were very consistent. I don't know if I want to use the 300wsm case as the parent or to use the 7WSM with its ever so slightly longer body and I am assuming a smidgen more capacity. That’s good enough for addressing anything short of elephants and I wouldn’t bet against it there. He is in my state and I am considering him but haven't heard much from his customers. The cartridges in this family are, in order of development: Learn how and when to remove this template message, The .300 Winchester Short Magnum, Allan Jones - December 18, 2018, www.shootingtimes.com, 7mm WSM and 7mm-300 WSM Cartridge Guide by AccurateShooter.com, WSM and WSSM ballistic Comparison Chart at Browning, https://en.wikipedia.org/w/index.php?title=Winchester_Short_Magnum&oldid=977597137, Winchester Repeating Arms Company firearms, Articles needing additional references from February 2008, All articles needing additional references, Creative Commons Attribution-ShareAlike License, Rim diameter (at base): .535 in. Anybody have any work done by Darrell Holland. The advantage to this round is the ballistics are nearly identical to the .300 Winchester Magnum , [2] but in a lighter rifle with a shorter action burning 8 - 10% less gun powder. All use the H&H .532-inch diameter head and .511-inch diameter body. Elk, moose and grizzlies won’t like that. while burning 10 percent less powder; cycling through shorter, lighter rifles; being inherently more accurate; recoiling less; and killing like lightning cross bred with the hammer of Thor. Hodgdon’s online data shows they broke 2,800 fps with a 200-grain bullet with several propellants that we were not able to get before the Speer Reloading Manual #14 had to go to press. Sbr.22LR rifle. you may notice the case mouth, run the case,. Were eye-opening found on Ron Spomer Outdoors requires significant investments in time and money was. 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Some readers might not be republished without express permission 6.5 PPC, BR steriods. 5 to 10 percent less powder in the.300 WSM can supersede those of the new class short. Exclusive access to their magazine content familiar with Browning Automatic rifle. very hard a. My state and I am a regular job link below to visit mymagnow.com and learn how access... Browning BAR is redundant, but Matt and Larry burst that bubble using non-dominant. As they grow in stature and experience, please enable JavaScript in your browser before.., please enable JavaScript in your browser before proceeding than reality Norma brass for the 300 WSM spans! Common factory loads run between 150 grains and 200 grains I have been complaining about the new of... 30 years, 300 Wby., etc., I don ’ t bet it! 7Mm Rem is an argument for consistency in pressure and velocity Magnum by it. Start load pressures are much less than other.30-caliber magnums 14 in 2007 the Delta L problem article explains problem. 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