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	Winchester Short Magnum - Wikipedia, the free encyclopedia
		Winchester Short Magnum, or WSM, refers to a "family" of cartridges developed in the early 2000s by the U.S. Repeating Arms Company, the maker of Winchester rifles and one of the oldest firearms manufacturers in the United States.
		All of the WSM cartridges are based on the 404 Jeffery non-belted magnum cartridge which is shortened to fit a short rifle action (such as a.308 Winchester).
		The WSM family was inspired partially by a family of proprietary short magnum cartridges developed by John Lazzeroni, derived from a previous line of magnum cartridges he had created.
	en.wikipedia.org /wiki/Winchester_Short_Magnum (376 words)

	Shooting Times Magazine: Winchester's Short Magnums
		Winchester's second.270-caliber cartridge in its history is also its second entry in the Winchester Short Magnum series.
		The new.270 WSM and 7mm WSM are based on the original short, fat, beltless.300 WSM case, which was developed by Winchester and Browning sui generis for the new WSM series.
		The.300 WSM clocks 2970 fps at the muzzle; the.300 Winchester Magnum clocks 2960 fps.
	www.shootingtimes.com /ammunition/st_0201_winchester (2496 words)

	Winchester Short Magnum -- Browning Information and News
		Moving beyond the obvious ballistic advantages of the WSM concept, there are also huge advantages in the rifles that fire these powerhouse cartridges.
		However, by introducing long-action, belted magnum ballistics to the world of lightweight, short-action rifles, WSM calibers have effectively rewritten the rules that govern what a hard-hitting, high velocity rifle can be.
		Rifles chambered in WSM calibers are simply lighter and faster handling than their long action counterparts thanks to the shorter, stiffer actions and barrels used.
	www.browning.com /products/features/detail.asp?id=78 (260 words)

	Winchester Short Magnum .270 Wsm 130 Gr. Bst 20 Rds., Rifle Ammunition, Winchester at Sportsman's Guide (Site not responding. Last check: 2007-10-08)
		WX2-65529 - Winchester® Short Magnum.270 WSM 130 Gr.
		WX2-65532 - Winchester® Short Magnum 7 mm WSM 140 Gr.
		WX2-65533 - Winchester® Short Magnum.300 WSM 150 Gr.
	www.sportsmansguide.com /cb/cb.asp?a=213733 (277 words)

	Short Magnums
		The WSM magnum case has a 35-degree shoulder, a length of 2.1 inches, and a very short neck.
		The main argument in favor of any of the short magnums is their alleged greater efficiency due to their shorter powder column.
		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.
	www.chuckhawks.com /short_magnums.htm (2301 words)

	Midwest Magnum
		Their pressures are higher, I have not seen accuracy to consistently match that of the.300 Winchester Magnum with 180- and 190-grain bullets, and their fatter cases do something that nobody seems to have noticed.
		Magnum cartridges (named after the oversize "magnum" bottle of champaign) used to be somewhat longer than "standard" cartridges such as the.30-06.
		Many of the older magnums are chambered in rifles that have 26-inch barrels, and the short magnums (typically 23- and 24-inch barrels) cannot equal their velocity.
	www.midwestmagnum.com (19623 words)

	.300 Winchester Short Magnum (Site not responding. Last check: 2007-10-08)
		Magnum velocities are now possible in a case that is about half an inch shorter than the 300 Win Mag, but with higher pressure and more bolt thrust.
		In contrast, the.300 WSM has a short, fat, sharp shouldered case which in my opinion is better suited for benchrest shooting where the main goal is accuracy, rather than chambering quickly another round on a dangerous animal at close quarters.
		The.300 WSM may come in a nice light weight rifle, with a short action, that handles very well is not disputed.
	www.deerstalker.com /300wsm.htm (1329 words)

	New Winchester 325 WSM
		When Winchester® introduced the 300 Winchester Short Magnum cartridge in 2000, shooters and hunters quickly began debating which calibers would be added to the line.
		Winchester engineers considered several different calibers during development and determined that the 325 caliber was the best performer in the WSM platform.
		The 325 WSM is the ideal package for the hunter of elk, bear, moose or other large and dangerous game, where a lightweight, short magnum rifle is desired.
	www.westernhunter.com /Pages/Vol06Issue07/325wsm.html (449 words)

	Winchester Super Short Magnum. -- Browning Information and News
		In 2003, with inspiration from high-velocity benchrest cartridges like the 6mm BR and 22 PPC, the 223 and 243 Winchester Super Short Magnums (WSSM) were introduced.
		The impressive speeds of the WSSM are achieved by putting a lightweight bullet on top of a short, fat, high-volume case.
		The short, fat shape of the WSSM cartridges produce a more uniform powder burn, providing consistent shot to shot velocity and better accuracy.
	www.browning.com /products/features/detail.asp?id=2 (299 words)

	Safari Club International \| Wildlife Conservation (Site not responding. Last check: 2007-10-08)
		Winchester states their design goal was to match.25-06 performance in an action length that was two sizes shorter than the standard-length needed for â06-based cartridges.
		I was surprised that Winchester chose the Super Short case for their new.25 instead of the larger WSM hull on which the.270, 7mm and.300 Short Magnums are based.
		What it boiled down to for Winchester was essentially a choice between 1) Use the Super Short case and match.25-06 velocities in a rifle thatâs two action lengths shorter, or 2) Use the WSM case and match the.257 Weatherby in a rifle thatâs one action length shorter.
	www.safariclub.org /static/index.cfm?contentID=308 (1363 words)

	Real Guns - The .270 WSM - In pursuit of stubby cartridges Part 2
		I am stating that belts are missing from modern magnums, not as an improvement to case performance or safety, but rather as a manufacturing cost consideration, and a shift to a different existing parent cartridge that do not incorporate a belt.
		Short magnums are the best because they are new and therefore easier to promote, and the least costly to produce; less brass, less powder, less steel required in firearms.
		The WSM is already at maximum cartridge overall length with lighter bullets, so any increase in bullet length protrudes further into the case, displacing ever increasing amounts of powder....maybe.
	www.realguns.com /archives/079.htm (3412 words)

	Remington's Short-Action Ultra Mags
		Like the parent Ultra Mag hull and Winchester's Short Magnum, the rim of these Remington shorties is rebated to.532" to match that of the conventional belted magnum so that a new bolt face configuration isn't needed.
		In a side-by-side with the.300 WSM we find the Remington case to be 1⁄8-inch shorter in body and in overall length, and to have a 30- rather than a 35-degree shoulder.
		Though I fully expect Winchester to announce a 7mm version of their short magnum by year's end, they don't have one as of this writing, so we can't make any comparisons.
	www.rifleshootermag.com /ammunition/short_action_ultra_mag (1117 words)

	Winchester Brings Back the .25-35!
		Amongst all of the pageantry, celebration, and promotion of the latest short magnums, which have become the darlings of the gun industry during the past few years, Winchester has quietly and without fanfare reintroduced the good old.25-35 into their lever action rifle line.
		With the recent introduction of the.25 Winchester Super Short Magnum (WSSM), I was both surprised and ecstatic when I heard of the reintroduction of the.25-35 into the Model 94.
		Winchester Ammunition has kept the.25-35 ammo in production, along with RWS in Europe, where the cartridge is known as the 6.5x52Rmm, over the past few decades.
	www.gunblast.com /Winchester_25-35.htm (2361 words)

	Adventures with the .300 Winchester Short Magnum Guns Magazine - Find Articles (Site not responding. Last check: 2007-10-08)
		Winchester announced their.300 Short Magnum in 2000, but as I write this over a year later we're only now beginning to see them in stores.
		And on the heels of the Winchester short.30 comes news of.270 and 7mm variants from Winchester and short magnums in.30 and 7mm from Remington.
		These are beltless magnums and capitalize on the dislike of belted cases that seems to be growing.
	www.findarticles.com /p/articles/mi_m0BQY/is_6_49/ai_100727287 (943 words)

	:: GunHunter Magazine ::
		Winchester followed the Ultra Mag’s act with a series of “Short Magnums.” These use a very similar case that is 1/2 inch shorter for use in short-action rifles.
		Obviously, the rifle options are expanded with the use of a short action, but what also emerged is that this style of cartridge is very “user friendly.” For reasons that have never been completely explained, the perceived recoil from the WSM cartridges is much lower than that of the similarly performing belted magnums.
		Winchester had an idea that a.270 update for the new millennium might be a good idea, and it turns out they were right.
	www.gunhuntermag.com /Features/040407Magnums.html (2529 words)

	U.S. Repeating Arms Company Introduces The Winchester Super Short Magnum (WSSM).
		Winchester firearms, in partnership with Browning and Winchester ammunition, once again lights a fire within the shooting industry.
		The 223 and 243 WSSM calibers are the latest exciting additions to the Model 70 family.
		This short fat firecracker of a cartridge is so short (2.36") that a totally new short action — super short if you will — had to be developed.
	www.winchesterguns.com /services/press/detail.asp?id=2 (202 words)

	Real Guns - The Winchester Legacy
		The 7mm WSM made much more sense, but it seemed to have not really gotten off the ground; perhaps shooters caught in the gravitational pull of the 7mm Remington Mag, or perhaps the WSM rode on the negative coat tails of Remington's 7mm SAUM.
		The WSM and Winchester's gem, I believe, is the 270 WSM and I believe the Model 70 should end, if it has to end, on that very note.
		The Winchester company grew out of control during the WWI years, found themselves over capacity and deeply in debt and was forced to reorganized 1919.
	www.realguns.com /Commentary/comar120.htm (1408 words)

	Evolution of Magnum Rifle Cartridges
		Subsequent magnum rifle cartridges that followed the same basic principles were the 7x61mm S&H,.308 and.358 Norma Magnums,.264,.300,.338, and.458 Winchester Magnums, and the 7mm, 8mm, and.416 Remington Magnums.
		The.300 WSM and 7mm WSM had exactly the same design goal as the Remington.300 and 7mm Short Action Ultra Mags, and were also based on a drastically shortened version of the.404 Jeffery case.
		The fundamental meaning of magnum, remember, is "big case." The modern firearm press, in sharp contrast to the gun magazines of the 1960's that greeted the original.350 and 6.5mm short magnums with disdain, very conspicuously failed to point this out to their readers.
	www.chuckhawks.com /evolution_magnum_cartridges.htm (1483 words)

	Short Magnum Trifecta
		The Winchester Short Magnum family now consists of (l to r):.270 WSM, 7mm WSM and the original.300 WSM.
		The.300 WSM was and is a great cartridge, but it was immediately obvious that the case had great potential for use with other calibers.
		The powder in a short, fat case ignites and burns more efficiently than the same volume of powder in a long, slender case because the primer gas (flame) immediately accesses a greater percentage of the charge.
	www.gunsandammomag.com /ammunition/short_magnum_trifecta (1387 words)

	Winchester Ammunition Browning U.S. Repeating Arms - AMMO/Reloading Shooting Industry - Find Articles (Site not responding. Last check: 2007-10-08)
		Responding to the success of its.300 Winchester Short Magnum (WSM), Winchester Short Magnum (WSM), Winchester Ammunition is introducing two new short magnums, the 7mm WSM and.270 WSM.
		According to Winchester, the 7mm WSM exceeds the ballistics of the longer 7mm Rem.
		Browning is chambering its A-Bolt rifle in 7mm WSM and.270 WSM.
	www.findarticles.com /p/articles/mi_m3197/is_12_46/ai_81305648 (313 words)

	:: Buckmasters Online :: (Site not responding. Last check: 2007-10-08)
		When I mentioned that I had not yet seen either a Winchester or Browning rifle chambered for this new cartridge, he proceeded to tell me about a well stocked Remington dealer in another part of the state that could order one for me in no time.
		Now I love Remington rifles, too, but it dawned on me that this friend was confused in thinking that Winchester's new short magnum was the same as a new short magnum version recently announced by Remington.
		Remington's short magnum version is 0.126 inches shorter from head to shoulder than the Winchester WSM cartridge and 0.035" shorter in overall maximum loaded length.
	www.buckmasters.com /buckmasters_links/features/011101Confused.html (487 words)

	300 WSM - Winchester Short Magnum cartridges and rifles. Why no short magnums in the TC Encore or Ruger #1? WSM, WSSM, ...
		Promoted as a performance upgrade for short frame bolt action rifles, the 300 WSM provides about the same velocity as the original 300 Winchester Magnum...
		The WSM is now also available in.270 and 7mm chamberings with similar high performance in short action bolt guns.
		A look at accuracy handload data that's published in the new Sierra reloading manuals shows maximum velocities (at least for 300 WSM) that are 100-200 fps slower than the published velocities of factory loaded ammunition.
	www.eabco.com /WSM01.htm (934 words)

	WSSM Zone -- Your one-stop shop for all things WSSM including reloading data for the 223 WSSM, 243 WSSM, and 25 WSSM
		The Winchester Super Short Magnum, or more effectually known by their acronym: WSSM, is a class of cartridges that were first introduced in 2003 (.223 and.243 calibers) and 2004 (.257 caliber) after Winchester introduced the Winchester Short Magnum (WSM) in 2001.
		Structurally, the WSSM sits in a new "super short" action that is roughly.5 inch shorter then the standard short action of a cartridge like the 243 Winchester.
		Browning in Winchester were also able to determine that they could stretch barrel life and maintain MOA accuracy to 1500 rounds by chrome lining the barrel.
	wssmzone.com (1288 words)

	.25 Winchester Super Short Magnum (WSSM)
		Winchester Ammo, in partnership with Winchester Firearms and Browning, introduces.25-caliber cartridges to its Super Short Magnum Line.
		Per Winchester Ammo, the ballistics of the.25 WSSM are equal to ballistics of the.25-'06 cartridges, with 14 percent less powder and less perceived recoil--all in a shorter action rifle (See full ballistics charts below).
		Additionally, Both Winchester Rifles and Shotguns and Browning are adding the.25 WSSM caliber to the Model 70 and A-Bolt Families.
	www.rifleshootermag.com /wssm25_1119 (388 words)

	.300 Winchester Short Magnum
		The first of these is that with bullets at the heavy end of the list--the 220 grainers, for instance--you have to push the bullet deeply into the case, which uses up a bunch of internal volume and severely restricts potential performance.
		The second problem with the short configuration is that the cannelure grooves on a number of bullet designs are too far back on the bullet to match up with the mouth of the.300 WSM case.
		About the only downside to the magnum primers is that sometimes they cost you a little bit of accuracy (but my test target indicates there's no evidence of that here).
	www.gunsandammomag.com /reloads/300wsm_0401 (960 words)

	Winchester .325 WSM
		Winchester Ammo expands its popular short magnum line with the addition of the all-new.325 WSM.
		Working in tandem with Winchester Ammunition, Browning and Winchester Firearms have each built line extensions of their popular rifles to accommodate the new cartridge.
		The rifles weigh an average of 6.5 to 6.75 pounds, and the barrel length is 23 inches (except for the Micro Hunter’s, which is 22 inches).
	www.outdoorlife.com /outdoor/gear/article/0,19912,1021282,00.html (456 words)

	New Winchester Ammo Blows The Doors Off
		In cooperation with Browning and US Repeating Arms Company, Winchester Ammunition is introducing two new magnum cartridges; the 223 WSSM Winchester Super Short Magnum and the 243 WSSM Winchester Super Short Magnum.
		The two new cartridges give true magnum performance to both the 223 and the 243 calibers in a super-short package.
		In addition to the loaded rounds in the new Winchester Super Short Magnums, Winchester is also going to offer unprimed brass cases in both the 223 WSSM and 243 WSSM.
	www.westernhunter.com /Pages/Vol04Issue12/winproducts.html (526 words)

	Rifle Reloading Data, Hodgdon Powder Co., Inc., The Brand That's True, Smokeless powder for reloading, and Pyrodex (Site not responding. Last check: 2007-10-08)
		In 1925, Winchester Repeating Arms Company awakened the American public to the concept of flat shooting big game cartridges with the introduction of the 270 Winchester in the Model 54.
		From that time forward, the 270 Winchester has been the hallmark by which all other high performance cartridges are judged.
		With H4350 powder, it is possible to exceed the performance of the 270 Winchester by 200 feet per second.
	www.hodgdon.com /data/rifle/270winshortmag.php (398 words)

	Model 1999 Montana Short Actions (Site not responding. Last check: 2007-10-08)
		This action will handle any cartridge from the 243 Winchester up to 300 Winchester Short Magnum length cartridges.
		One for standard cartridges that has an internal magazine length of 3.125" and one for the Winchester Short Magnum Cartridges.
		The action is available with either a standard bolt face of.473" or a magnum bolt face of.534" depending upon the cartridge of the rifle you are building.
	www.montanarifleman.com /shortaction.htm (183 words)

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