7mm Rem Mag vs 300 Win Mag: Cartridge Sizes. It is worth noting that the 6.5mm Mag. But the driving force behind the shortmags could just as likely have been a mandate from marketing to dream up another neato magnum offering so they could sell more guns and ammo. Remington introduced their .300 SAUM shortly after Winchester's .300 WSM hit the market. It pretty well fills the bill for a short action elk caliber with all-around capabilities and it was on the ground first, although the .300 RCM is technically superior. Units of Measure. The Speer Reloading Manual No. Joined: Jun 18, 2011 Messages: 37 Location: Connecticut. Compared to true magnum cartridges such as the .240 and .257 Weatherby Magnums they are an embarrassment. The .325 WSM is intentionally misnamed to make it sound bigger than it is. In a hunting rifle, any advantage conferred by a shorter powder column is insignificant. came on the scene and won the hearts of many hunters looking to use a bullet of less than .30 caliber, and quickly overtook the .264 Win. 7mm Win Short Mag Ammo. (3112 ft. It is an 8mm cartridge and its performance is nearly identical to that of the .300 WSM. Newbie22 Member. SAUM and .300 RCM also advertise similar ballistics. 7mm Remington Short Action Ultra Magnum Rifle Cartridge by Nosler Inc. Nosler - Bullets, Brass, ... Abbreviated Name: 7mm Rem SA Ultra Mag Slang Name: 7mm SAUM . (An unnecessary reduction in firepower is clearly undesirable when hunting dangerous game.) As such, they (along with the 6.5mm and .350 Rem. Magnum, .270 WSM and .350 Rem. As far as I can tell, all WSSM caliber rifles have been discontinued, although Winchester continues to offer the ammo. The .338 RCM is offered factory loaded with 200 and 225 grain bullets, which is fine as far as it goes. 7x65mm Rimmed Ammo. Ballistics Calculator. was reintroduced in 2004, also in the Model 673. Mag. Note that these RCM cartridges are not rebated rim designs. Meanwhile, Remington had made the first .300 Short Action Ultra Mag cases in 1999 and was already well along in the process of developing their Short Action Ultra Mag cartridges. [3], Cost is another factor limiting popularity. With any rebated rim case, the face of the bolt has less overlap with the rim of the case as it attempts to slide it forward and out of the magazine lips. WSM and WSSM family of cartridges. is a true medium bore cartridge. With a 160 grain bullet the Winchester figures are 2990 ft/s and 3176 ft. lbs. The overall cartridge length is 2.86 inches. The new 7mm short magnums are clearly redundant. More important, the short magnum cartridges work through short rifle actions, which saves about 1/2 inch of bolt throw as well as overall rifle length, and a few ounces of weight. The 6.5mm Rem. The 6.5mm Remington Magnum is a flat shooting, long range CXP2 class game (deer, antelope, sheep, goat, and black bear) cartridge on the order of the .270 Winchester. This means that they offer improved feeding reliability compared to the WSM and SAUM short magnums. Mag. Following the initial success of the .300 WSM, the .270 WSM, 7mm WSM and 7mm SAUM were introduced. The 7mm WSM is similar to the .300 WSM and .270 WSM cases necked down to handle .284" bullets. Some people erroneously believe the short case necks make the 7mm WSM poorly suited to heavier bullets, limiting the cartridge's usefulness on larger game. Mag. 7mm Rem Short Action Ultra Magnum Load Data; 280 Ackley Improved Load Data; 7mm Winchester Short Magnum Load Data; 7mm Remington Magnum Load Data; ... 7mm Wby Mag. The main argument in favor of any of the short magnums is their alleged greater efficiency due to their shorter powder column. .270 versus 7mm Rem Mag. From left to right: http://www.chuckhawks.com/short_magnums.htm, http://www.chuckhawks.com/factory_ammo_prices.htm, http://www.ballisticstudies.com/Knowledgebase/7mm+Winchester+Short+Magnum.html, https://en.wikipedia.org/w/index.php?title=7mm_Winchester_Short_Magnum&oldid=977598058, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 September 2020, at 20:15. This cartridge came about as the result of a failed attempt to create a .338 WSM. The lighter, shorter 7mm bullets are preferred in these short case magnums. Design. Mag., .270 WSM, .300 WSM, 7mm WSM, .300 Rem. in an 8 pound rifle) in the light weight hunting rifles that are the natural home of short magnum cartridges. These figures are well beyond what the short action .358 Winchester can achieve. SAUM, 7mm Rem. has about a 100 fps advantage with these heavier bullets. The RCM's were introduced in 2008. IMR 4350 seems to be an efficient powder for this cartridge. 300 Blk. The 7mm Winchester Short Magnum (also known as the 7mm WSM) is a centrefire cartridge developed in partnership with Browning Arms Company and Winchester ammunition, making its debut and introduced to the shooting public in 2001. The Short Magnum Cartridges 9.3x74mm Rimmed Ammo. In reality rifles chambered for the 7mm WSM typically chronograph 50-100 ft/s faster than the 7mm Remington Magnum with all bullets weights. The 6.5mm Remington Magnum followed it the next year. Mag. A short action 27” barreled 7mm WSM is approximately the same length as a 26” barreled 7mm Remington Magnum. I am not a ballistician so I never could figure why I was having trouble. In 2004 they announced the .25 WSSM. The WSM magnum case has a 35-degree shoulder, a length of 2.1 inches, and a very short neck. 7mm WSM Ballistics. There has been speculation about what other calibers might be offered in one or the other of the short magnum formats. Mag., 6.5 Rem. Interesting cartridges, these short magnums. These should have been named WSSC (Winchester Super Short Cartridge), for the WSSM cartridges are not magnum cartridges in any sense of the word and thus do not really merit inclusion in this article. The Federal Ballistics Calculator lets you quickly determine the trajectory for any rifle or handgun load, and save data for an unlimited number of loads. The .270 WSM kicks a lot harder than the 6.5mm Magnum, just under 19 ft. lbs. Nor are their sharp 30-35 degree shoulders conducive to smooth and reliable feeding. All rights reserved. October 28, 2013 and exactly the same claim is made for the 7mm WSM. The .270 WSM shoots as flat as the 6.5mm Magnum and hits a little harder. Foundry Outdoors carries the best selection of 7mm WSM Winchester Short Magnum ammo online. The chamberings of choice are the .284 Winchester, 7mm Winchester Short Magnum (7mm WSM), and 7mm Remington Short Action Ultra … For 2017 they are available ONLY in the Ruger Guide Gun. Remington’s 7mm Mag. The true short magnum cartridges begin with the 6.5mm Rem. Mag. Compare all 7mm Remington Magnum ammunition manufacturers on one easy to read chart. (The latter is rather a mixed blessing when shooting a magnum cartridge.). For this reason, cartridges with rebated rims are not regarded as a good choice for use in rifles that might be used on dangerous game. Paramount are the uniformity and concentricity of the bullet, the quality and precision of the rifle barrel, the care taken in bedding the barrel and inletting the stock, and the care with which the loads are assembled and matched to the rifle. The actual ballistics obtained with your firearm can vary considerably from the advertised ballistics. Any .300 Magnum is most appropriate when the emphasis in on hunting the larger species of big game. Remington adopted these dimensions to enable their short magnum cartridges to fit into the compact Model 7 action. vs. .300 Win. It has a rebated rim, bottleneck casing with a 1:9.5 twist on a large rifle magnum primer. You can buy the 6.5 in … On the other hand, the Winchester Short Magnum cartridge does not have a gigantic advantage in either category either and there’s actually a smaller difference in the ballistics of the 7mm WSM vs 7mm Rem Mag than there is with the 270 WSM vs 270 Winchester. 30 Caliber.308” Diameter. It has plenty of killing power, even when fired from a 22 inch barrel. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, Unfortunately, their stubby, short necked cases are not well adapted to 160 and 175 grain bullets, so they are less suitable for hunting the large game for which most customers purchase a 7mm Magnum rifle. The following are Winchester .300 WSM figures. 13 shows top velocities of 2942 fps with their 180 grain bullet, 2676 fps with their 220 grain bullet and 2484 fps with their 250 grain bullet, all taken in the 22 inch barrel of a Ruger M-77 rifle. The stats are generated using both a 7mm Remington Magnum, Winchester Ballistic Silvertip, 140g (ballistic coefficient 0.46) and a 7mm Remington Magnum, Winchester Ballistic Silvertip, 150gr (ballistic coefficient 0.493) being fired at a velocity of 3100fps 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 ballistics of the .350 Remington Magnum factory load introduced in 2003 claim a 200 grain bullet at a MV of 2775 fps and ME of 3419 ft. lbs. The 180 grain factory load claims a MV of 2970 fps and ME of 3526 ft. lbs. The 7mm Winchester Short Magnum (also known as the 7mm WSM) is a centrefire cartridge developed in partnership with Browning Arms Company and Winchester ammunition, making its debut and introduced to the shooting public in 2001.. You can see some of the differences between the .300 Winchester Magnum and 7mm Remington Magnum cartridges in the photo below. These figures were all taken in a 24 inch test barrel. Mag. The combination of great ballistics with manageable recoil has made the 7mm cartridge a favorite among long-range prone and benchrest shooters. Mule Deer Cartridge Showdown: .270 Win. These are the most useful of the short magnum cartridges, although not the most popular. Factory loaded ammunition for the 6.5 and .350 Magnums was (temporarily) discontinued during the 1990's. It actually has a .315" bore diameter and should have been named the .315 WSM. The .350 Rem. 7x57mmR Ammo. 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