All use the H&H .532-inch diameter head and .511-inch diameter body. Gun Parts - Stocks, Barrels, Actions, etc. I guess that means the powder burns hotter or more completely with fewer unburned kernels blown out the muzzle. That’s good enough for addressing anything short of elephants and I wouldn’t bet against it there. Compared to a full-length, magnum-action (300 RUM, 300 Wby., 300 H&H Magnum, etc.,) the short-action should be six to eight ounces lighter. 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.. Once you get used to cycling your action, regardless its length, it’s no big deal. Long bullets intrude into its powder space, too. Win mag I thought Skip was talking about using the straight 325WSM, I get how using the 325 case would be real easy to neck up and I am considering that option seriously. He is in my state and I am considering him but haven't heard much from his customers. For North America the 300 WSM is a superb, no-questions-asked, do-it-all cartridge. I plan on using a Wyatts extended magazine box so 3.000 inches shoulden't be a problem and I don't plan on using the really long 338 bullets. U.S. But should you sell your beloved, accurate magnum-action rifle just to gain recycling speed? It was seldom greater than EVs of any higher charge weight and definitely averaged less than other .30-caliber magnums. It barely tapers over its 1.464-inch length to the start of its 35-degree shoulder. Mag. Handloading manuals call for 5 to 10 percent less powder in the WSM to match velocities in the 300 Win. The concept of the short, fat cartridge—with a more compact powder column—wasn’t exactly new, as the .308 Winchester and its family had shown in the 1950s. This means you have the option to read your magazine on most popular phones and tablets. That means the 300 WSM does indeed cycle through short-action rifles, and those are always ballyhooed as being shorter, lighter, stiffer, and faster to run than standard- or magnum-length actions. Get the American Hunter Insider newsletter for at-a-glance access to industry news, gear, gun reviews, videos and more—delivered directly to your Inbox. It is designed to stop the case against a corresponding rim in the chamber. You can train new shooters with that load, and as they grow in stature and experience, increase the recoil incrementally. 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. Ball powders like Hodgdon’s H414 and Alliant’s Power Pro 4000-MR will generate the velocities you’re looking for without compromising case capacity; you’ll definitely want a large rifle magnum primer to spark the heavy powder charges. The extreme variation (or EV—the highest value in one data set subtracted from the lowest) for the lower charge weight pressures was usually conspicuously higher than those of charge weights closer to maximum pressure. Mag., 300 Wby., etc., I don’t see this as a significant problem. There are those who feel the WSM family is an example of the law of diminishing returns, and that the shooter/hunter may be better off with a more traditional cartridge. You should not rely solely on information contained in this email to evaluate the product or service being endorsed. 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. There is, however, room for both. Looking for previous installments of our "Behind the Bullet" series? How much time is saved when bolting in a short-action follow-up shot? If you already have a 300 Win. 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. Perhaps. ©2020 Outdoor Sportsman Group. This helps me produce better, higher-quality content. WSM case is too short and too fat. With some smaller caliber cases you may notice the case mouths to be slightly belled. Think about the distances at which you shoot and adjust your bullet choice accordingly; if you want to use your .300 WSM in the Northeast where shots are close, choose a premium bullet to avoid an excessive mess. How is the 325 brass quality wise? 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. All Rights Reserved. For decades our biggest, fastest magnums have been based on the long, belted H&H magnum case, which is the parent case for the 300 Winchester Magnum, the 7mm Rem. 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. Using the base diameter of the common H&H belted case (presumably for ease of manufacturing) instead of that of the slightly larger Jeffery parent case, the .300 WSM has a slightly rebated rim. The common factory loads run between 150 grains and 200 grains, though the .300 WSM can handle the full range of .30-caliber bullets. The Delta L problem article explains this problem in more detail. .308 to .338 is more easily achieved, but (325wsm/8mm) .323 to .338 is one pass thru the die, and I would think that would promote much better case life and ease you into wildcatting with a few less steps. I will be getting the action shortly then I need to wait a little bit before I call McMillan, wait a real long time, get a Jewell trigger, match striker assembly, and Wyatts extended mag box, wait some more and find a smith to chamber it all up for me. I referenced everything back to .30-06 velocities and charge weights, looking for what percent increase in propellant charge gave what percent increase in velocity over .30-06 velocities. This is probably because the 300 Win. All Shooting Times subscribers now have digital access to their magazine content. Kirby Allen or Shawn Carlock would do an out standing job I have no doubt. Tuesday, November 3, 2020. I do feel that the smaller siblings of the .300 WSM—namely the .223, .243 and .25 WSSM cartridges—suffer from a lack of attention from the ammunition manufacturers, as both ammo and component brass cases are quite often unattainable, and they probably won’t be with us for very long. That and it isn't a wildcat which for some reason I really want for my next rifle. With all new rifle brass, you should first straighten out the case and case mouth, then chamfer and debur the case mouth inside and out. The WSM also posted a maximum average velocity only 49 fps less than its bigger, older brother using 14 grains less propellant. Another influence was a series of 6 mm cartridges developed for bench-rest target shooting competitions in the 1970s. Consistent case-to-case weight and capacity delivers outstanding accuracy. Tactical Solutions Introduces New X-Ring Takedown SBR Rifle. Because the 300 WSM case is stretched about as far as it can be while still fitting a short-action, longer bullets must be seated into the powder space. Setting the .30-06 as a baseline, the well-established .300 Winchester Magnum uses 37 percent more propellant than the .30-06 to attain a 13 percent increase in velocity. The 270 WSM is third in line behind .270 Winchester and .270 Weatherby Magnum for the trio of .270 commercial rounds. Mag. Mag, 300 Win. You must log in or register to reply here. The .404 Jeffery, at 0.545 inch, is smaller ahead of the rim than either Winchester or Remington short/fat designs; they are 0.555 inch and 0.550 inch respectively. Parent Case.223 Remington.17 Remington.204 Ruger. Once again thanks for all the help guys.

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