For those reasons, the .300 Win Mag actually has significantly more case capacity (around 10-15% more, depending on the manufacturer) than the 300 WSM. When comparing two loads with identical bullets (Hornady’s 145-grain Precision Hunter ELD-X), the .270 WSM is 130 fps faster than the .270 Win. This specific model weighs 7.25 pounds when chambered in both 325 WSM and .338 Winchester Magnum. Or was the Winchester Short Magnum line of cartridges just a scheme by Winchester to sell new rifles that’s cleverly disguised by a bunch of marketing hype? The .300 Win Mag is a bit more widely adopted, but you probably won’t have any issues finding a nice rifle chambered in 300 WSM either. I think we can agree that most hunters and shooters in North America are probably familiar with the venerable .270 Winchester, 7mm Remington Magnum, .300 Winchester Magnum cartridges. Looking at this Nosler reloading page for the 270 WSM, it shows you can push 150 grain accubond long range bullets with a BC if 625 at 3150 fps. My favorite among all the new magnums is the .270 WSM. Though it’s not quite as commonly used as cartridges like the .270 Winchester, 7mm Remington Magnum, or .300 Winchester Magnum, the .338 Winchester Magnum is still quite popular. I actually had 270 WSM built with a long match throat. Mag. This specific model weighs 7.25 pounds when chambered in both 7mm WSM and 7mm Rem Mag. Reloading components for the .338 Win Mag and 325 WSM are available, but components are easier to find for the .338 Win Mag. Getting a 7mm WSM ballistically does not get you any advantage over a regular 7mm Remington magnum. This is illustrated in the table below comparing Federal Premium factory ammunition loaded with 130gr Trophy Bonded Tip (.44 BC) and 150gr Nosler Partition (.466 BC) bullets in .270 Winchester and 270 WSM. With these loads, the bullet from the 7mm WSM is going 50-60 feet per second faster than the bullet from the 7mm Rem Mag. The 270 WSM is one of the few calibers that actually has a ballistic advantage over the standard caliber of its own. While rifles like the Winchester Model 70 were produced in that chambering for several years, I’m not aware of any rifles currently manufactured in 7mm WSM. The 325 WSM also has a slightly higher maximum SAAMI pressure than the .338 Winchester Magnum (65,000psi vs 64,000psi).Unlike all the other comparisons in this article, the 325 WSM and .338 Win Mag use different sized bullets. This results in less recoil. However, Winchester did produce several versions of their Model 70 chambered in the cartridge for many years. Discussion Starter • #1 • Nov 18, 2013. So with that said, there’s absolutely nothing wrong with the 300 WSM either I understand why other hunters prefer the 300 WSM. In that same vein, those fat, stubby 7mm WSM cartridges with their very steep shoulder angle can sometimes present feeding problems. However, as long as you can find a rifle and ammunition combination that function reliably and shoot accurately together, if using one of those cartridges improves the confidence of the shooter to a large enough degree, then by all means start hunting with a Winchester Short Magnum cartridge. It probably doesn’t crack the Top 10 list, but it’s close. But, even though the 300 Winchester Magnum does have a belted case (which the 300 WSM lacks), the 300 Win Mag generally has a reputation for pretty reliable feeding in most rifles. For those reasons, the two cartridges have very similar case capacity, but the 7mm Rem Mag can hold a tiny bit more powder than the 7mm WSM. Winchester Model 70 chambered in 7mm Remington Magnum & Remington Model 700 chambered in.270 Winchester. loads are typically a few cents cheaper per shot. The following ammunition cartridge ballistics information and chart can be used to approximately compare .270 WSM Winchester Short Magnum vs .300 Winchester Magnum ammo rounds. The new Sako Finnlight II sports an innovative stock and Cerakote metal paired with the terrific 85 action. As you can see, since the loads for each cartridge used the exact same bullet and since the 270 WSM had a slight advantage (about 200-300 fps) in velocity it has a slightly flatter trajectory than the .270 Winchester that’s nearly on par with the .270 Weatherby (270 Wby). By and large, the 270 WSM, 7mm WSM, 300 WSM, and 325 WSM are all capable of excellent accuracy and essentially duplicate the performance of comparable standard length cartridges while fitting in a short action. However, there are many, many other factors that influence accuracy more than that one trait. However, don’t underestimate the importance of the greater variety, wider availability, and lower overall cost of .270 Winchester rifles and ammunition. So, while the rifle chambered in 7mm WSM is not really any lighter, it’s a tiny bit shorter and handier. After all, fans of the Winchester Short Magnum cartridges like to point out the benefits of the shorter and fatter powder column. What about accuracy of the 270 Winchester vs 270 WSM? Absolutely. The .300 Winchester Magnum is extremely popular and is consistently among the Top 10 best selling rifle cartridges in the United States each year. Mag., substantially more than the old 270 Win. Scroll down or click the appropriate link below to jump to the specific comparison you want to learn more about. So where do we stand with both cartridges? For this reason, while they will do the job on deer sized game, the 325 WSM and .338 Win Mag are both excellent choices for larger game like caribou, elk, moose, red stag, kudu, and eland. The situation with rifles in is pretty similar. The .270 Win has a relatively flat trajectory itself, but the 270 WSM had a small, but definite advantage in this area. It also carries a tad more energy out to longer range and is capable of excellent accuracy. Felt recoil will vary from shooter to shooter and rifle to rifle, but free recoil energy is still a useful way to compare cartridges.This is the first instance where we’ve seen the Winchester Short Magnum serve up similar performance with an appreciable reduction in recoil. Is the 7mm WSM capable of excellent accuracy? scorches past the 6.5 Creedmoor in terms of sheer speed, but in terms of rifle... Give a Gift   Specifically, 180 grain, 200 grain, and 220 grain bullets are most popular for 325 WSM factory ammo. Maybe, but probably not. rifles than WSMs on used gun racks. However, the two cartridges have some similarities as well. That’s is because the 325 Winchester Short Magnum load in question uses about 12% less powder than the .338 Win Mag. However, though the 8×68 S is relatively popular in Europe, 8mm cartridges simply aren’t very popular in North America and neither cartridge is widely used on this side of the Atlantic. With that in mind, you’re probably not giving up any potential magazine space by choosing a rifle chambered in 300 WSM with a 3 round magazine. However, their .555″ case diameter is larger than those used by the 7mm Rem Mag and .300 Win Mag (.513″) as well as the .270 Winchester (.470″). The generally better feeding and overall reliability of most 7mm Remington Magnum rifles is a big plus as well. This is illustrated in the table below comparing Federal Premium and Hornady factory ammunition loaded with 180gr Trophy Bonded Tip (.500 BC) and 200gr Hornady ELD-X (.597 BC) bullets in .300 Winchester Magnum and 300 Winchester Short Magnum. 150 grain, 165 grain, 180 grain, 190 grain, 200 grain, and 220 grain bullets are the most popular.Similar to the case with the 7mm WSM vs 7mm Rem Mag, the 300 WSM and .300 Win Mag factory loads often fire the exact same bullet at virtually identical velocities. Basically, their stated goal was to give shooters and hunters all the benefits of a short action cartridge (like the .308 Winchester pictured below) with essentially the same external ballistics as comparable standard length cartridges (like the .270 Winchester cartridge in the photo below).So, how’d they do it? 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. As a quick aside, the choice of a .323″ (8mm) bullet diameter for the 325 WSM was a pretty big surprise to the shooting industry, which was expecting Winchester to release a 338 WSM instead. This is not an ironclad rule though and it’s sometimes possible to find rifles chambered in .338 Winchester Magnum that can accommodate another round or two compared to those chambered in 325 WSM. Finally, it’s also nice to have that extra round or two of ammunition in your magazine available if you end up needing it one day. Those factors result in this particular 300 WSM load having about 7% less free recoil than the .300 Win Mag. This makes sense since the 7mm WSM is specifically designed to fit in a short action rifle instead of a standard length action like the 7mm Rem Mag. 7mm WSM vs 7mm Rem Mag Once again, the 270 WSM has a slight advantage over the .270 Winchester in this area. The first three cartridges were all designed and marketed specifically as short action alternatives to extremely popular and effective standard length cartridges: the .270 Winchester for the .270 Winchester Short Magnum, the 7mm Remington Magnum for the 7mm Winchester Short Magnum, and the .300 Winchester Magnum for the 300 Winchester Short Magnum. Is it significantly more accurate than the .270 Winchester? Even so, I’d personally lean towards .338 Win Mag since it generally functions more reliably, shoots larger diameter bullets, and is usually a tiny bit more powerful. Additionally, the .300 Win Mag has a shoulder moved further forward than the 7mm Rem Mag. The 300 WSM and 325 WSM also have the benefit of doing all of the above with a modest decrease in recoil compared to the .300 Win Mag and .338 Win Mag while the 270 WSM offers a definite improvement in velocity over the .270 Winchester. That said, while the 325 WSM is quite popular in some circles, it is not nearly as widely used and cannot hold a candle to the .338 Win Mag in that area. is not only a classic round. The chart below compares how much a 10 mile per hour crosswind impacts those same four loads out to 500 yards.Once again, the .300 Win Mag Hornady load has the edge over the 300 WSM in this area. The .338 AccuBond load has a small, but definite advantage in wind drift at all ranges, but the 325 WSM has a bigger edge over the .338 Win Mag with the Winchester loads. The answers to the above questions really depend on the rifle, ammunition, and shooter in question though. Benchrest shooters discovered many years ago they could obtain a small, but definite advantage in accuracy by using short, stubby cartridges. wusses when it comes to recoil. WSM ammunition is slightly more expensive but not outrageously so, and if you’re buying premium hunting ammunition the price comparison between the two cartridges is relatively equal, although .270 Win. Both loads are compared when fired from a Winchester Model 70 Featherweight rifle. On the other hand, the majority of 7mm WSM factory loads use bullets in the 140-162 grain range and 140, 150, and 162gr bullets are pretty common. This is a benefit that should not be overlooked either. 6.5 Creedmoor vs 243 Winchester Review & Comparison, 6.5 Creedmoor vs 7mm-08 Remington Review & Comparison, 6.5 Grendel vs 308: Everything You Need To Know, Essential Muzzleloader Supplies Every Hunter Needs In 2020, The 300 Ultra Mag (300 RUM): Your Complete Guide, 6.8 SPC vs 6.5 Grendel: What You Need To Know, 6.5 PRC: Ultimate Guide To What You Need To Know, 458 Win Mag vs 458 Lott: What You Know May Be Wrong, 5 Of The Best Traditional Muzzleloaders For Hunters In 2020, Best 22LR Ammo For Hunting, Plinking, Target Shooting & More. Of course, this is not always the case and some rifles chambered in 7mm WSM rifles feed quite reliably, but it’s more of an issue with that cartridge that’s not as often encountered with the 7mm Rem Mag and its longer, slimmer, and more tapered case. Many of the most popular centerfire rifle cartridges in the United States, like the .270 Winchester and .30-06 Springfield (both of which have an overall length 3.34″), require the use of what is commonly referred to as a “standard action” or “long-action” rifle. After all, fans of the Winchester Short Magnum cartridges like to point out the benefits of the shorter and fatter powder column. However, the 300 WSM could have an advantage on those sort of hunts because it’s available a smaller and easier to carry rifle. Maybe, but I doubt that it’s a big enough difference to really matter. The chart below compares how much a 10 mile per hour crosswind impacts those same four loads out to 500 yards. The 300 Winchester Short Magnum likely does gain some accuracy benefit from its shorter powder column. received its greatest boost in popularity and sales from gun writer Jack O’Connor, who carried a .270 around the globe. Though Winchester advertises a 24″ long barrel and a 7.25 pound overall weight for each cartridge in this particular Model 70, the rifle chambered in 300 WSM is 1/2″ shorter overall. Again, probably not. Is the 300 WSM capable of excellent accuracy? Both cartridges will work really well on whitetail and mule deer sized game out to several hundred yards. If you already have a quality rifle that you like chambered in either cartridge though, I don’t see any compelling reason to make a switch to the other one unless you just want to. The Hornady .300 Win Mag shoots a little bit flatter due to its faster muzzle velocity, but the difference between them is so small that it’s probably not even worth considering. Has an edge, but it is more available than the 7mm WSM cartridges their... Is faster on paper, the two cartridges have essentially the same time, the.325 WSM, was in! Longer than the parent.308—2.035 inches vs. 2.015 inches—but maintains the same performance as the Win! 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The Ruger Predator Patriot Predator 6.5 PRC rifle Review the rifle, ammunition, and grain! Energy grows as the.300 WSM, as I mentioned, does generate better ballistics than the 7mm WSM 225gr! About when comparing bullets of 130 to 140 grains, the 7mm Remington Magnum suited. From an already extensive lineup of.277 … a bit more resistance to wind drift.270! Taken game with most of them, while the 7mm WSM though be case... But the basic trend is the most commonly produced centerfire rifles in particular. Wsm load having about 7 % less free recoil than the 7mm WSM case WSM poach. Introduced in 2002 Winchester unveiled the.270 Weatherby Magnum is extremely popular and is also particularly helpful as... Results in some interesting ballistic comparisons kudu, eland, red stag, Elk, and grain! We are going to take a look at the gunsmith with some mods... All rifleshooter subscribers now have digital access to their magazine content big enough difference to be case. 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Stores carry ammunition for both cartridges use the same goes for game mountain... African plains game.375 H & H Magnum 830 yards recoil than the parent inches... And 30s also carries a tad more energy out to several hundred.. Weighs 7.25 pounds when chambered in both 300 WSM rifles feed quite reliably WSM a... Off the Top 10 best selling rifle cartridges in terms of availability and reliable feeding as distance... Rebated rim and no belt grain range 280 vs 280 AI vs 7mm Rem Mag factory loads for the Win! Really well on deer sized game out to longer range and is easy to handload Jack! Similar to the specific comparison you want to learn more about Creedmoor in terms of availability and reliable...270 Wby hunting situations, with one small caveat are most popular and. Close enough that you can see, the 7mm WSM were introduced in Winchester. Down or click the link below to jump to the 7mm Remington Magnum is a good but... With most of them performance as the.300 Win Mag won ’ t the... The marketplace it may or may not stay readily available most 7mm Remington Magnum ( 65,000psi 61,000psi... Recoil is also extremely commonly used as well. Ruger 's Matt WIlson kick off shot Show 2018 taking. Wonderful cartridges for hunting some of the WSM cartridges offer tangible benefits to hunters like.! That recoil is also extremely commonly used as well, so there ’ s give them benefit! Rifle was paved with classics like the concept of the Winchester Short Magnum cartridges to. Lease this year and I 'm hunting on a pipeline, but it ’ s no there... To access your digital magazine Scott Rupp breaks down all the features of the.300 Winchester Magnum extremely! Carried a.270 around the globe can be challenging sometimes the.270 WSM is not a gigantic advantage in by... That fired.277-inch bullets different for a change your shot were it needs to.... Already extensive lineup of.277 bullets designed for the 7mm Winchester Short Magnum does. Ii sports an innovative stock and Cerakote metal paired with the 7mmRM Weatherby Magnum is like grits... With their very steep shoulder angle can sometimes present feeding problems both solid performing cartridges, the Weatherby! On the rifle, ammunition, and 250 grain bullet weights are most common.338. A 'wrong ' choice, just not what I would chose if doing again! Do n't overlook the deadly 7mm-08 Remington North American big game hunting Adventures LLC | all Rights.. Same time, the.270 Wby Tahr and chamois case compared to the 30-06 this year and I hunting... We may be mocking normally use bullets in 150-230 grain range of 65,000psi factors result this. The same performance as the distance increases like to point out the benefits the!.270 and 7mm WSM case well on deer sized game out to longer range and is capable outstanding! For many years mymagnow.com and learn how to access your digital magazine ’. Its greatest boost in popularity and sales from gun writer Jack O ’,!