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. Special deals on 7mm WSM Winchester Short Magnum ammo.Products listed on our website are in stock and ready to ship. Discussion in 'Rifle Country' started by Newbie22, Oct 9, 2012. 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 latter is rather a mixed blessing when shooting a magnum cartridge.). Mag. The 7mm Rem Mag is a flat shooting round that is available in a good selection of bullet weights, though maybe not as many as the .30-06 Springfield. Abbreviated Name: 7mm WSM TECHNICAL INFORMATION: All of the WSM cartridges are based on the 404 Jeffery non-belted magnum cartridge, and have been shortened to fit a short action. 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. Overall cartridge length is 2.8 inches. The 6.5mm Remington Magnum followed it the next year. They are both belted magnums based on a blown out .375 H&H case with a 25-degree shoulder, reduced to a length of 2.17 inches. 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. These claims are valid if the short magnum cartridges are fired in 24 inch barrels, the same length as the barrels of most 7mm Rem. Magnum are unique cartridges and each offers something special to the shooter. I have both 7mm Mag and 6.5PRC rifles. 7x65mm Rimmed Ammo. While the .350 Rem. Complete .300 Winchester ammunition ballistics Chart. SAUM and .300 RCM also advertise similar ballistics. The WSSM's are hard pressed to equal the performance of existing short action cartridges, such as the .220 Swift, 6mm Remington and .257 Roberts +P. (3133 ft. limit the average shooter would do well to observe. These figures were all taken in a 24 inch test barrel. The .300 SAUM is already obsolescent, as even Remington has quit chambering rifles for it. That's when Winchester kicked over the traces and brought out their .300 WSM cartridge, based on a new bottleneck case with a head diameter of .555 inch and no belt. Such a cartridge would have no advantage over the .257 Weatherby and could not match that cartridge's ballistics, but it would clearly outperform the .25 WSSM. Thread Status: Not open for further replies. Rimfire Ammo 17 HMR Ammo. Firstly, both rounds are belted mags based on the .375 H&H Magnum cases.The primary function of a belted magnum was to provide accurate headspace control because the sloping shoulders, while reducing … They are too similar to each other and neither offers any ballistic advantage over the established and much more popular 7mm Remington Magnum. (3221 ft. The body of the case is bigger around than the rim. I thought "well this may be the answer to my issue"! In the same class as the .300 short magnums is the .325 WSM. 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. Recoil energy with either of the .300 short magnums runs about 23-26 ft. lbs. The 7mm WSM and 7mm Remington Magnum are best suited for the exact same hunting situations. The lighter, shorter 7mm bullets are preferred in these short case magnums. The 7mm Remington Magnum is a versatile cartridge that’s well-served by slow burning powders. I am not a ballistician so I never could figure why I was having trouble. and exactly the same claim is made for the 7mm WSM. The .270 WSM kicks a lot harder than the 6.5mm Magnum, just under 19 ft. lbs. The 7mm WSM d… ... Ballistics. The 7mm WSM cartridge achieves its useful purpose as an excellent cartridge for larger mule deer, sheep, black bear and elk. Ballistics comparison video between the 7mm Remington Magnum vs the 300 Winchester Magnum. They have not achieved any lasting commercial success and WSSM rifles have already been discontinued. Complete 7mm Remington Magnum Winchester ammunition ballistics Chart. Anyone shooting a .350 Magnum rifle today should be reloading. Note that these RCM cartridges are not rebated rim designs. In a hunting rifle, any advantage conferred by a shorter powder column is insignificant. Hornady offers .300 RCM factory loads with 150, 165 and 180 grain bullets; 200 and 225 grain bullets are offered in the .338 RCM. (3112 ft. The 140 grain factory load advertises a MV of 3225 fps (3175 fps) and ME of 3233 ft. lbs. Case capacity of the SAUM is slightly less than the WSM, as is the factory COAL. Mag. Mag. The Short Magnum Cartridges The Speer Reloading Manual No. The case is based off a .300 WSM with a narrowed neck to fit .284 inch bullets on a .321 inch neck and the parent case is the .404 Jeffery. 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 other day my friend offered to let me shoot his Browning 7mm short mag. Any .300 Magnum is most appropriate when the emphasis in on hunting the larger species of big game. As such, they (along with the 6.5mm and .350 Rem. The 7mm Rem Mag has a ton of potential other than merely being a hard-hitter if you handload the cartridge. The .350 Rem. 7mm WSM Ballistics. The .338 RCM is offered factory loaded with 200 and 225 grain bullets, which is fine as far as it goes. 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 .325 WSM is intentionally misnamed to make it sound bigger than it is. It has a rebated rim, bottleneck casing with a 1:9.5 twist on a large rifle magnum primer. The newer .270 Winchester Short Magnum cartridge has factory loads using a 130 grain bullet at a MV of 3275 fps and ME of 3096 ft. handily out-performs the new .25 WSSM, also introduced in 2004, as a big game hunting cartridge. The recoil is much less than what you'd think. This length was chosen to allow it to work in the Model 7 short action rifle. 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. The .350 Remington Magnum is a special cartridge because it brings true medium bore stopping power to short action rifles, combined with a useful 260 yard maximum point blank range. However, their fat bodies have a head diameter immediately above the extractor groove of about .55 inch. The actual ballistics obtained with your firearm can vary considerably from the advertised ballistics. The Remington 6.5mm Magnum factory load drives a 120 grain bullet to a muzzle velocity (MV) of 3210 fps and muzzle energy (ME) of 2745 ft. Mag. Velocities for this barrel length are on average, 80fps faster than the standard 7mmWSM and the reduction in recoil can aid accuracy immensely. Nor are their sharp 30-35 degree shoulders conducive to smooth and reliable feeding. 9.3x62mm Mauser Ammo. This cartridge came about as the result of a failed attempt to create a .338 WSM. Recoil is right up there, at about 25 ft. lbs. The 150 grain factory load advertises a MV of 3200 fps (3110 fps) and a ME of 3410 ft. lbs. This can lead to feeding failures and over-ride jams. These are based on the fat (.550 inch head diameter), beltless, .300 Ultra Mag case shortened to a length of 2.015 inches. You can buy the 6.5 in … in an 8.5 pound rifle, although this is actually moderate for a medium bore magnum. The standard length 7mm Rem. The 7mm WSM and 7mm Rem. The biggest problem with any .300 Magnum is its excessive recoil, which is well beyond the 15-20 ft. lb. 7x57mmR Ammo. Mag. The differences between the 7mm Rem Magnum and the .300 Winchester Magnum rounds are shown in the table above. .350 Rem. 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. Bullet Style: Partition Use: Deer & Elk Sized Game. 7x30mm Waters Ammo. 30-06 Sprg. That's plausible. Winchester claims a muzzle velocity (MV) of 3,225 ft/s with a 140 grain bullet for their 7mm WSM cartridge; the claimed muzzle energy (ME) is 3,233 ft. lbs. It was a cartridge decades ahead of its time when it was introduced. As for the other short magnum calibers, time will tell, but they are not setting any sales records. 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.. The first true commercial short magnum was the .350 Remington Magnum, introduced in 1965 by Remington. lbs., well beyond the performance of the standard short action .260 Remington. 7mm Rem Mag vs 300 Win Mag: Cartridge Sizes. 7mm-08 Remington Ammo. The overall cartridge length was set at 2.825 inches. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, It actually has a .315" bore diameter and should have been named the .315 WSM. You can see some of the differences between the .300 Winchester Magnum and 7mm Remington Magnum cartridges in the photo below. Like the earlier Remington short magnums, they mate with standard magnum-size bolt faces. 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. In short, like the 7mm Rem Mag, the .300 Win Mag is an excellent cartridge that packs more performance than the .30-06 Springfield into a comparably sized package. 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. The overall cartridge length is 2.86 inches. It … by a nose. 7mm Rem Ultra Mag. 308 Mar Exp. That leaves the .338 RCM a definite step ahead of the .325 WSM, but clearly inferior to the .338 Win. This means that they offer improved feeding reliability compared to the WSM and SAUM short magnums. 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. 300 RCM. The combination of great ballistics with manageable recoil has made the 7mm cartridge a favorite among long-range prone and benchrest shooters. Compare all 7mm Remington Magnum ammunition manufacturers on one easy to read chart. All of the WSM and SAUM cartridges use a .532-.534 inch rebated rim of standard (.375 H&H) Magnum diameter. It is worth noting that the 6.5mm Mag. [2], The 7mm WSM has failed to gain the same popularity as the other cartridges in the WSM family. What Are The Finer Points In Reloading the 7mm Rem Mag. 7mm Rem Mag vs 300 Win Mag – Comparing Cartridge Sizes. There has been speculation about what other calibers might be offered in one or the other of the short magnum formats. Mag. Regardless, if I had to pick just one of these for all-round hunting, it would be the 7mm Rem. The true short magnum cartridges begin with the 6.5mm Rem. The shoulder angle was moderated to 28 degrees in an attempt to retain a modicum of feed reliability. 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. was reintroduced in 2004, also in the Model 673. 300 Sav. The fact that it also has a milder recoil than the 300 Win Mag makes the 7mm Rem Mag a sound choice for those heading out on mountain hunting expeditions. Ammunition prices are higher than those of the 7mm Remington Magnum and the .280 Remington,[4] both of which have similar performance to the 7mm WSM, with the 280 Rem having slightly less muzzle energy and the 7mm Rem Mag being roughly equal. In reality rifles chambered for the 7mm WSM typically chronograph 50-100 ft/s faster than the 7mm Remington Magnum with all bullets weights. Mag. The new 7mm short magnums are clearly redundant. Following the initial success of the .300 WSM, the .270 WSM, 7mm WSM and 7mm SAUM were introduced. This gun in a short action with a 26″ barrel tips the scale at 6 lbs 3 ozs. In 2004 they announced the .25 WSSM. has about a 100 fps advantage with these heavier bullets. That alone might be a good reason for Ruger and Hornady to take such a step. in an 8 pound rifle, but less than the other short magnum cartridges. Neither of Remington's original short magnums were commercial successes, although the .350 gained a sort of cult following. .270 versus 7mm Rem Mag. Also, the short 7mm magnums are not recommended (for the reasons cited above) for hunting thin-skinned dangerous game (bears and big cats). The 150 grain factory load has a claimed MV of 3300 fps and ME of 3628 ft. lbs. The standard length 7mm Rem. As the 7mm Rem Mag is of smaller caliber than the 300 Win Mag, it is a very good choice for lighter, smaller animals. I can see some appeal to the idea of a .250 Short Magnum based on the .300 RCM case. In fact, one of the justifications for the extremely sloping 8.5 degree shoulders of the original .375 and .300 H&H Magnum cartridges was feed reliability because of their anticipated use on dangerous game. Another drawback is its vicious recoil in the light Browning and Winchester rifles supplied in .325 WSM, recoil comparable to the .338 RCM and in excess of the .350 Rem. In reality, many factors influence intrinsic accuracy and performance more than the length of the powder column inside of the cartridge. Mag. All of these are based on the WSM case shortened to a length of only 1.65" and a COL of 2.36". In shorter barrels, performance declines dramatically. Joined: Jun 18, 2011 Messages: 37 Location: Connecticut. Foundry Outdoors carries the best selection of 7mm WSM Winchester Short Magnum ammo online. As a cartridge for a "guide rifle" it is hard to beat. None, however, are interchangeable. Re: 7mm mag vs 7mm wsm ?? They are not just duplicates of earlier cartridges. I look at all this with considerable interest, having just inherited some rifles, including an R700 7mm Remington Magnum. However, the distance from the case head to the datum line on the shoulder is longer for the 7WSM, preventing accidental chambering or firing of the .284" 7mm bullet in .270 WSM's .277" bore. This miracle of design is called a rebated rim and it allows increased powder capacity compared to the earlier .350 Magnum case, at the price of decreased feed reliability and one cartridge less magazine capacity. 9x18mm Makarov Ammo. Compared to true magnum cartridges such as the .240 and .257 Weatherby Magnums they are an embarrassment. By David E. Petzal. 9.3x72mm Rimmed Ammo. It is a member of the Winchester Short Magnum family of cartridges. These .308 length offerings, developed by Hornady for Ruger, are based on shortened .375 Ruger case. lbs.). The .300 WSM, .300 Rem. There were some wildcat and proprietary short magnums developed during the intervening years, but no other SAAMI standardized short magnum cartridges were introduced until 2000. All velocities were measured in a 24 inch rifle barrel. In 2005 the .325 WSM came along. Copyright 2002, 2017 by Chuck Hawks. The 6.5mm Rem. We have a wide collection of quality ammunition for handgun ammo, rifle ammo, shotgun ammo & rimfire … Compare all .300 ammunition manufacturers on one easy to read chart. The chamberings of choice are the .284 Winchester, 7mm Winchester Short Magnum (7mm WSM), and 7mm Remington Short Action Ultra … is a true medium bore cartridge. Best prices on 7mm WSM Winchester Short Magnum ammo for sale online. In this cartridge comparison of the 7mm Rem Mag vs .300 Win Mag, ... it also must send heavier grain bullets down range while maintaining necessary terminal ballistics. and 6.5mm Rem. [3], Cost is another factor limiting popularity. And, in spite of the myriad attempts to produce a 7mm Mag. However, after looking at the Sherman case, it looked exactly like a 6mm Dasher on steroids! SAUM and .300 RCM also advertise similar ballistics. 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. 300 Blk. The WSM magnum case has a 35-degree shoulder, a length of 2.1 inches, and a very short neck. Mags.) It is no different in this respect than the popular 300 Winchester Magnum. (An unnecessary reduction in firepower is clearly undesirable when hunting dangerous game.) Mule Deer Cartridge Showdown: .270 Win. The .300 WSM seems to be the favorite among all of the short magnums. The WSSM's are really best suited for use in single shot rifles, just like the bench rest cartridges that inspired them and they have been a sales flop. With a 160 grain bullet the Winchester figures are 2990 ft/s and 3176 ft. lbs. in an 8 pound rifle, depending on bullet weight. 28 Nosler. 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. 9.3x74mm Rimmed Ammo. Factory loaded ammunition for the 6.5 and .350 Magnums was (temporarily) discontinued during the 1990's. Given the initial lack of consumer acceptance, the development of short magnums languished after 1966. All figures taken in 24 inch test barrels. 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 .270 WSM shoots as flat as the 6.5mm Magnum and hits a little harder. 7mm STW. Design. 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Weatherby magnums they are too similar to the shooter the emphasis in on hunting the species.
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