It also carries a tad more energy out to longer range and is capable of excellent accuracy. With this in mind, designers at Winchester Repeating Arms elected to build a line of cartridges that could fit in a short length action with the goal of achieving similar performance to popular standard length cartridges. Mine is sighted in at 2.5" high at 100 and stays below a 30" drop at 500 yards. The 270 WSM does indeed have a flatter trajectory and more resistance to wind drift than the .270 Winchester. However, while that factor may well contribute to better accuracy, there are many other factors that influence accuracy to a much larger degree. I do like the 270, but the 270 Win that I have in the safe is potent enough for any deer in North America. In addition to potentially giving up a little bit of magazine capacity due to the fat and stubby design of the 325 WSM cartridge, those same traits (along with the cartridge’s very steep shoulder angle) can sometimes present feeding problems. 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. The 7mm WSM is becoming a dinosaur right before our eyes. The following ammunition cartridge ballistics information and chart can be used to approximately compare .270 WSM Winchester Short Magnum vs 7mm-08 Remington ammo rounds. But just like with trajectory though, they are close enough that you can say they have essentially the same amount of wind drift. Lbs.) The .300 Winchester Magnum and 300 Winchester Short Magnum cartridges have essentially the same external ballistics. The 7mm Rem. Unfortunately, the future isn’t looking very bright for that cartridge right now. Versatility, flat shooting and plenty of knockdown power. However, the 270 WSM uses a heavier rifle and the .270 Winchester gets a slight edge when both are used in the same weight rifle. All four loads used a 200 yard zero.As you can see, since the loads for each cartridge used the exact same bullet and since there is an extremely small difference in velocity between the two cartridges, they each have virtually the same bullet trajectory. Great caliber (7mm), wrong cartridge. 300 wsm 180 Accubond 7mm rem mag 160 Accubond to 500 yards. Both cartridges normally use bullets in 150-230 grain range. Additionally, the .300 Winchester Magnum is a traditional belted magnum while the 300 WSM has a rebated rim and no belt.Just like with the 7mm WSM vs 7mm Rem Mag, even though the 300 WSM uses a case with a larger diameter, the .300 Win Mag also uses a relatively large diameter case itself and is significantly longer. The 7 mag my dad has packs a good punch! Between the .270 WSM and the 7mm mag, the 270 will have the higher ballistic coefficient and sectional density, given that both bullets are of the same type and weight. a better known caliber and has been around longer. I went with the 325 to try something different for a change. So, while the rifle chambered in 7mm WSM is not really any lighter, it’s a tiny bit shorter and handier. The particular 300 WSM load above shoots the same weight bullet at very nearly the same muzzle velocity (over 99% as fast), but uses about 8.5% less powder. I've killed at least 1 cow and 3 bull elk with the 300 WSM/180 2,950 combo. For instance, a current production Winchester Model 70 Sporter chambered in 325 WSM weighs about 7.25 pounds and has an overall length of 44.24″. Additionally, the company also advertised that the shorter case used by the WSM cartridges resulted in superior accuracy and less recoil. John de Witt. The two cartridges (along with others like the 7mm Mauser, 7mm-08, 7mm Weatherby, 280 Remington, 280 Ackley Improved, and 7mm Remington Ultra Magnum) use the same .284â³ bullets. .300 Win Mag ammo is probably a little bit easier to find, it’s not by much and you’re likely to find a good selection of ammo for both cartridges regardless of where you go. Probably not. Is it significantly more accurate than the .270 Winchester? The sectional densities and ballistic coefficient are so close its a toss up between the two. After all, the .300 Win Mag is capable of excellent accuracy itself and is generally very highly regarded in that area as well. Felt recoil will vary from shooter to shooter and rifle to rifle, but free recoil energy is still a useful way to compare cartridges.As you can see, that particular 325 WSM load has about 83% of the free recoil energy of the .338 Win Mag load, which is a pretty major reduction in recoil. Once again, the 270 WSM has a slight advantage over the .270 Winchester in this area. 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. That’s is because the 325 Winchester Short Magnum load in question uses about 12% less powder than the .338 Win Mag. As we’ll discuss in a little more detail later in this article, there is a somewhat limited selection of 325 WSM factory ammo, so it’s tough to conduct a true “apples to apples” comparison of the 325 WSM vs 338 Win Mag ballistics. The 325 WSM has similar ballistics to the magnum action, medium bore 8mm Remington Magnum and 8×68 S cartridges. Though I like the 325 wsm, ammo availability shut the door on it for me. all specs seem soo close it wouldnt probably make a difference. All are very solid performers that are extremely popular with big game hunters pursuing game like deer, elk, black bear, and moose. That’s not a gigantic difference, but it’s certainly not nothing either. Those â¦ Interestingly enough, a .323″ bullet diameter is exactly halfway between the .308″ bullets used by the 300 WSM and .300 Win Mag on one hand, and the .338″ bullets used by the .338 Win Mag on the other. A lot of folks swear by the .270 but I personally felt it was a little light for elk hunting. Though it’s possible to find rifles chambered in .300 Win Mag with a larger magazine, that’s a pretty typical magazine size for the cartridge. Exactly why I went with 7mm. Remember: we’re talking about accuracy under practical hunting conditions, not benchrest shooting where a .1″ or .2″ improvement in group size can make a big difference. with the 7mm i can find heavier loads than the wsm, which should be better, or is the 12 ga still a better choice for bears? I am happy with my decision. Just like with trajectory though, it’s a small edge due entirely to the slightly faster muzzle velocity of the Winchester Short Magnum cartridge. Is the 325 WSM capable of excellent accuracy? Like I said, they’re all well designed and very capable hunting cartridges. However, both the 7mm Remington Magnum and 7mm Winchester Short Magnum cartridges are capable of excellent accuracy in the right hands and will get the job done under most circumstances if the shooter is up to the task. 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. However, both Nosler and Winchester manufacture their Trophy Grade and Power Max Bonded lines of ammunition in both cartridges. 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. Additionally, the .338 Winchester Magnum is a traditional belted magnum while the 325 WSM has a rebated rim and no belt. i was also gonna take this gun along camping in the mountains for bear protection. Those factors result in this particular 300 WSM load having about 7% less free recoil than the .300 Win Mag. 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. Just like with the 270 WSM, this is due to the very large diameter of the 7mm WSM cases that simply take up more space in a rifle magazine than the thinner 7mm Rem Mag case. There is a decent selection of factory ammo available in the cartridge from companies like Federal, Hornady, and Winchester. But off the top of my head it would seem to be the case. LMAO. Both cartridges are also well suited for hand loaders and reloading components for the .270 Winchester and 270 WSM are widely available. Goodbye 7mm Rem. Comparing the .270 with the 7mm Remington magnum is like comparing grits and white cornmeal. Finally, while the two cartridges use the same 7mm bullets (.284″ diameter) and there is a big overlap in typical bullet weights for each cartridge, the 7mm WSM normally uses lighter bullets than the 7mm Remington Magnum. It’s not a gigantic difference, but this often means that the 270 WSM has a definite advantage in terms of external ballistics and sometimes slightly less recoil, but that the .270 Winchester is more often available in shorter, lighter, and easier to handle rifles. However, don’t underestimate the importance of the greater variety, wider availability, and lower overall cost of .270 Winchester rifles and ammunition. The table below compares the recoil produced by two Nosler hand loads (available here and here) firing 200gr Nosler AccuBonds at virtually the same velocity: 2,885fps for the 300 WSM and 2,910 for the .300 Win Mag. However, even though the .338 Win Mag (like the 7mm Rem Mag and .300 Win Mag) is derived from the .375 H&H Magnum and uses a fatter case than cartridges like the .270 Winchester, the 325 WSM still has a much fatter case with less taper and a steeper shoulder angle (35 degrees vs 25 degrees). Remember: we’re talking about accuracy under practical hunting conditions, not benchrest shooting where a tiny improvement in group size can make a big difference. However, the Winchester Short Magnum cartridges all use a much fatter case without a belt that more closely resembles the case used by the old .404 Jeffery as well as the later Winchester Super Short Magnum (WSSM) line of cartridges. At reasonable shooting ranges, there’s very little practical difference between them ballistically and both cartridges will really do a number on both species of game. While there is a big overlap in bullet weights the 325 WSM and .338 Win Mag can use (both cartridges are commonly loaded with bullets in the 180 grain to 250 grain range), the .338 Win Mag generally leans a little heavier than the 325 WSM. The .270 Win has a relatively flat trajectory itself, but the 270 WSM had a small, but definite advantage in this area. The 7mm WSM and 7mm Remington Magnum are best suited for the exact same hunting situations. However, they’re being measured against four of the most popular American centerfire rifle cartridges of all time in the .270 Winchester, 7mm Remington Magnum, .300 Winchester Magnum, and .338 Winchester Magnum, and that’s a tough hurdle to get over. On the other hand, the Winchester Short Magnum cartridge does not have a gigantic advantage in either category either and thereâs 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. 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. In fact, the difference in published velocity is often smaller for the 300 WSM vs 300 Win Mag than the 7mm WSM and 7mm Rem Mag. Well, the 200gr 325 WSM bullet starts off with a little bit less muzzle energy than the 200 grain .338 Win Mag bullet, but the 325 WSM is more aerodynamic and pulls ahead in the energy and trajectory departments at 100 yards and 300 yards respectively. However, the 325 WSM and 300 WSM have a similar case capacity, but due to the fact that the shoulder is placed further forward on the .300 Win Mag, the .338 Win Mag actually has a little less case capacity than the .300 Win Mag. This is not a guarantee of course and some 300 WSM rifles feed quite reliably. This is not a hard and fast rule, but it is a common occurrence with these two particular cartridges. 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. The WSM load has 10.5% (197 ft. The generally better feeding and overall reliability of most 7mm Remington Magnum rifles is a big plus as well. The .338 Winchester Magnum and 325 Winchester Short Magnum cartridges have similar, external ballistics, especially at ranges inside 300 yards. Felt recoil will vary from shooter to shooter and rifle to rifle, but free recoil energy is still a useful way to compare cartridges.As you can see, the two cartridges have almost identical amounts of recoil with the 7mm Rem Mag in this particular example actually having a tiny bit less free recoil energy than the 7mm WSM. Both are also capable of outstanding accuracy in the right hands. There’s not a darn thing wrong with the 270 WSM either though and there’s really no reason to make a switch either if you already have a good hunting rifle chambered in either cartridge that you like. 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. used for deer only! Just like with the 7mm WSM vs 7mm Rem Mag and 300 WSM vs 300 Win Mag, even though the 325 WSM uses a case with a larger diameter, the .338 Win Mag itself has a relatively large diameter case and is significantly longer. 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. Both have their good points. Ammo should be readily available in any Sporting Goods Store. Much more versatility if you ever need the bigger bullets. More on this in a minute, but it’s worth noting that for those two AccuBond loads in particular, the 325 WSM has almost 95% of the kinetic energy of the .338 Win Mag and has essentially the same trajectory out to 200 yards. So with that said, there’s absolutely nothing wrong with the 300 WSM either I understand why other hunters prefer the 300 WSM. Is it significantly more accurate than the .338 Winchester Magnum? That small reduction in recoil is also particularly helpful here as well. Now that we’ve covered the basic history and design of the Winchester Short Magnum cartridges, let’s see how they compare to the .270 Winchester, 7mm Remington Magnum, 300 Winchester Magnum, and .338 Winchester Magnum. is i worth my time to get a 7mm wsm, i am looking at getting a browning X-bolt for hunting elk in either 7mm rem mag or 7mm wsm, the rem mag has 26 inch barrel and the wsm has 23 inch barrel would that make any difference, and i noticed that there is not as many factory loads for the wsm, but i have found a few that i know will work, and i plan on learning how to reload. The answers to the above questions really depend on the rifle, ammunition, and shooter in question though. When you consider the fact that the 270 WSM has significantly more case capacity than the older .270 Winchester and that both cartridges have the same maximum SAAMI pressure, it shouldn’t be surprising that the 270 WSM is actually capable of shooting the same weight bullet at a higher velocity than the .270 Winchester. Additionally, the Winchester Short Magnum Cartridges all have a case with very minimal taper and a 35 degree shoulder. On paper, the Winchester Short Magnums are very closely matched with their standard length cousins. Having said all that, when I recently compared the two, I ended up with the 7mmRM. 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. Maybe, but probably not. (25 at 4000) 8.5 In that same vein, those fat, stubby 270 WSM cartridges with their very steep shoulder angle can sometimes present feeding problems. If you enjoyed reading about ".270 WSM vs. 7 mm Rem Mag" here in the FamilyFriendsFirearms.com archive, you'll LOVE our community. Both are also capable of outstanding accuracy in the right hands. Is it significantly more accurate than the .300 Winchester Magnum? For all intents and purposes, there is no difference between them ballistically and both cartridges will really do a number on most species of big game. They’re both outstanding cartridges and I’d say that the 300 WSM is the best designed out of the Winchester Short Magnum line. 325 WSM vs 338 Win Mag Using the 4 calibers you selected, I would go for the 300 win mag. The 270 WSM is relatively popular itself (probably the second most popular Winchester Short Magnum cartridge behind the 300 WSM), but it can’t hold a candle to the .270 Winchester in terms of overall availability. Regardless of the very real strengths of the 325 WSM, that’s a really tough barrier for the Winchester Short Mag cartridge to overcome. In this article, Iâm going to do a detailed analysis of the 270, 7mm, 300, and 325 Winchester Short Magnum cartridges and compare them to the .270 Winchester, the 7mm Remington Magnum, the .300 Winchester Magnum, and the .338 Winchester Magnum in an effort to answer the above questions and parse out the their true strengths and weaknesses so you can make an informed decision regarding which one will work best for you. The table below compares the recoil produced by two Nosler hand loads (available here and here) with ballistics roughly comparable to the 130gr loads above for those cartridges when fired from a Winchester Model 70 Featherweight rifle. I would say the .270 is perfectly tolerable on the bench without a brake. The buck I killed with my 7mm-08 at 541 yards was just as dead. 270 WSM vs 270 Winchester Maybe, but probably not. Theyâre pretty much the same thing. The 270 WSM and 325 WSM are more of a mixed bag, but offer advantages to hunters in certain aspects as well and this is reflected in their popularity in particular segments of the hunting community as a whole. Come join FamilyFriendsFirearms.com today for the full version! Indeed, the 6.5 Remington Magnum, the .350 Remington Magnum, and the line of proprietary Lazzeroni cartridges all came on the scene before the WSM line, but none really caught fire for various reasons. However, standard/long actions and short actions are two of the most common and are most relevant to the development of the Winchester Short Magnum line of cartridges. If you already have a rifle in the cartridge and don’t mind the smaller selection of factory ammo (or if you’re into handloading), the 7mm WSM will also serve you very well as a hunting cartridge. The same goes for game like mountain goat, bighorn sheep, Himalayan Tahr, and chamois. Both cartridges are also well suited for hand loaders and reloading components for the .300 Win Mag and 300 WSM are widely available. By. Find a good gunsmith and get a muzzle brake! The Lyman 50th Edition (p197-198, 199-200, 214-216, 219-220,257-259, 260-262, 288-289, 294-295) and Hornady 10th Edition (p351-359, 356-359, 406-411, 412-416, 564-573, 574-585, 637-639, 659-664) reloading manuals were used as references for the history of the cartridges. The 7mm is kind of in between, but I got a smokin good deal on it. I hate belted cases, and I own a 270 WSM, but I'd recommend the 7mm Remington Magnum anyway, unless there's some reason not 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. Indeed, it’s even possible to see that much shot to shot variation within the same box of ammo for a particular cartridge. .270 WSM all the way. Like I mentioned a minute ago, that particular 325 WSM load above has essentially the same trajectory and still has about 95% of the kinetic energy of that .338 Win Mag load. With the whims of the marketplace it may or may not stay readily available. However, Winchester did produce several versions of their Model 70 chambered in the cartridge for many years. WhatsApp. 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 7mm Remington Magnum is one of the most popular centerfire rifle cartridges in North America and is likely among the Top 10 best selling rifle cartridges in the United States. For this reason, this particular Model 70 in 270 WSM is actually longer (44″ vs 42.5″) and heavier (7.25 pounds vs 7 pounds) than the Model 70 in .270 Winchester. I started out hunting mule deer in the early 1980âs with a 30.06. This means that it’s possible to build a short action rifle that’s a tiny bit shorter and lighter than an otherwise identical rifle with a standard length action. The .338 Winchester Magnum (along with the .338 Federal, .338 Lapua, .340 Weatherby Magnum, .338 Ruger Compact Magnum, and .338 Remington Ultra Mag) all use the same .338â³ bullets. The .270WSM is more than adequate for up to and including Elk, Caribou and Moose. So, depending on the exact rifle model in question, it’s likely that one chambered in 325 WSM will be somewhat shorter and handier as well as potentially a little lighter. Finally, the two cartridges use the same .308″ diameter bullets and there is a big overlap in typical bullet weights for each cartridge. However, the rifles are noticeably lightweight, offering non belted magnum performance; that all shoot accurately. The answers to the above questions really depend on the rifle, ammunition, and shooter in question though. varies from company to company, but the basic trend is the same regardless of the exact rifle we’re talking about. The 7mm WSM does indeed have a flatter trajectory and a tiny bit more resistance to wind drift than the 7mm Rem Mag. That’s a pretty major step down in recoil, especially when you take into account that you’re getting almost the same amount of performance out to 200-300 yards. It also carries a tad more energy out to longer range and is capable of excellent accuracy. Does the difference between the two cartridges in terms of accuracy make a difference for most hunters under typical conditions? However, the 8mm bullets (.323″) used by the 325 WSM (as well as the 8mm Mauser, 8mm Rem Mag, and 8×68 S) are not nearly as easy to find in the United States. However, the two cartridges have some similarities as well. I guess riflemen are becoming While I would not describe the 7mm WSM as a rare or hard to find cartridge, it’s not especially popular or widely available. A 7mm Rem Mag with a 140 grain bullet has significantly more recoil than a .270 WSM with a 130 grain bullet unless you use a muzzle brake. The 7mm WSM also has a higher maximum SAAMI pressure than the 7mm Remington Magnum (65,000psi vs 61,000psi). Source(s): 270 wsm 7mm rem mag: https://shortly.im/wynVp. That heavier and more aerodynamic bullet retains energy better at long range and the edge in kinetic energy grows as the distance increases. 7mm rem mag is good, but higher chance to hit and still run For example, so called “magnum actions” are even longer than standard actions. The 7mm Remington mag is well established but not so versatile as the .30-06. Once again, there is essentially no difference between the recoil of the two cartridges though. The table below compares the recoil produced by two Nosler hand loads (available here and here) that essentially duplicate the AccuBond loads described above. After all, fans of the Winchester Short Magnum cartridges like to point out the benefits of the shorter and fatter powder column. the 270 wsm operates at around 63000 psi and the 7mm stays around 54000 psi. 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. They rounded out the lineup with the 325 Winchester Short Magnum in 2005. Note: No company currently manufactures rifles chambered in 7mm WSM. The 7mm shoots .284-inch diameter bullets through bores .28-inch across, but only two use this Imperial measuring system in their titles: .280 Remington and .284 Winchester, both excellent but under-rated âstandardâ velocity cartridges. I'm thinking of buying a 7mm Mag or a .270 WSM. Below you can see the differences between the 325 Winchester Magnum and the .338 Winchester Short Magnum in terms of external dimensions. 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. Use A Thermacell To Stop Bug Bites While Hunting & Camping. 14.07 fps 24.6 foot-pounds. Absolutely. Shooting 270 WSM and 7 Rem Mag edit b 1_2-18-2016 Vito Monopoli. 7mm-08. Not surprisingly, many sportsmen and women were a little skeptical about the line of Winchester Short Magnum cartridges introduced in the early 2000s that claimed to offer even better performance than these legendary centerfire rifle hunting cartridges. Cartridge (Wb@MV) Rifle Weight: Recoil energy: Recoil velocity.17 HMR (17 at 2550) 7.5: 0.2: n/a.17 Hornet (20 at 3650) 8.5: 0.6: 2.0.17 Rem. Glad to see the WSM family got some attention. This is one of the tougher aspects of using the 325 WSM: there’s not a gigantic variety of factory ammo or a large number of bullet choices for hand loaders to choose from. 3rd installment in my caliber vs caliber series. 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. This makes sense since the 270 WSM is specifically designed to fit in a short action rifle instead of a standard length action like the .270 Winchester. 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. So, not only is it possible to shave some length and weight off a rifle while retaining the same length barrel, but shorter actions also give the shooter an advantage from a shorter bolt throw (and a correspondingly faster cycling time) as well as a tiny advantage in accuracy due to their stiffer action. 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Specifically, 180 grain bullets fired at virtually the same hunting situations purchase! Well, so called “ Magnum actions ” are even longer than standard actions from for both use. Killed elk with the proper barrel and scope it has excellent longer range and is capable of outstanding in! The proper barrel and scope it has excellent longer range and the 7mm.!