Rifles in both cartridges are also extremely common. However, both 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. I purchased a Browning AB3 in the 300wsm set it up with a Nikon scope and put a slip proof sling on it… THEN, I purchased the the “twin” in a 270wsm and did the same thing I did with the 300wsm.. This specific model weighs 7.25 pounds when chambered in 270 WSM and 7 pounds when chambered in .270 Winchester. 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. 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. It's pretty close to the 280 Ackley and since you're a reloader, obtaining ammo won't be an issue. In the shooting sports we call that reaction recoil or "kick." All told, both are wonderful cartridges for hunting some of the larger species of North American big game or African plains game. This is not the case for the 7mm WSM though. 6.5 Grendel vs 5.56/223: Review & Comparison, Best 308 Ammo For Hunting Deer, Elk, Hogs, & Other Game, Best 7mm-08 Ammo For Hunting Elk, Deer & Other Game, 6.5 Creedmoor vs 300 Win Mag Review & Comparison, Best 7mm Rem Mag Ammo For Hunting Elk, Deer & Other Game, 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 2021, The 300 Ultra Mag (300 RUM): Your Complete Guide, 6.8 SPC vs 6.5 Grendel: What You Need To Know. 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 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. As you can see in the photo below, there are some pretty big differences in external dimensions between the 7mm WSM and the 7mm Rem Mag. The .300 Winchester Magnum is extremely popular and is consistently among the Top 10 best selling rifle cartridges in the United States each year. First, the .270 Winchester is significantly longer. However, while those that may well contribute to better accuracy, there are many other factors that influence accuracy to a much larger degree. 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. 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 see a 0 in the Recoil Velocity column it signifies no data available for that particular load. The chart below compares how much a 10 mile per hour crosswind impacts those same four loads out to 500 yards. Since those older cartridges already have such well established (and deserved) reputations, not to mention an abundant selection of quality rifles and ammunition, any new cartridge competing against them had better provide a significant advantage to convince enough people to make that switch. 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. Both cartridges normally use bullets in 150-230 grain range. 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. However, Winchester did produce several versions of their Model 70 chambered in the cartridge for many years. Unfortunately, the future isn’t looking very bright for that cartridge right now. Virtually every major brand of ammo is available in 7mm Rem Mag. All of these numbers were calculated using Browning X-Bolt rifles. It is not uncomfortable at the range if I shoot 25 or 30 rounds through it. This is illustrated in the table below comparing Federal Premium and Hornady factory ammunition loaded with 140gr Trophy Bonded Tip (.430 BC) and 162gr ELD-X (.631 BC) bullets in 7mm WSM and 7mm Rem Mag. 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. The two Hornady loads fired the same bullet with a scant 30 fps of difference between them, with the .300 Win Mag having a tiny velocity edge. The 270 Winchester Short Magnum or 270 WSM is a short, unbelted, magnum cartridge created by necking down the .300 Winchester Short Magnum and fitting it with a .277 caliber bullet. 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 7mm WSM is 1/2″ shorter overall. Again, probably not. However, both Nosler and Winchester manufacture their Trophy Grade and Power Max Bonded lines of ammunition in both cartridges. The 270 WSMis third in line behind .270 Winchester and .270 Weatherby Magnum for the trio of .270 commercialrounds. In theory, this results in improved accuracy for the shorter case. The 325 WSM is an attractive choice for hunters in the niches I described above and those that use the cartridge generally seem to absolutely love it. Indeed, it’s even possible to see that much shot to shot variation within the same box of ammo for a particular cartridge. However, the 270 WSM has a very fat case with minimal taper and a much steeper shoulder angle (35 degrees vs 17.5 degrees).For those reasons, the 270 WSM is unique among the Winchester Short Magnum cartridges for actually having significantly more case capacity (around 10-20% more, depending on the case manufacturer) than its standard length cousin. Exhibits a few handling marks but little evidence of actual shooting. Is the 300 WSM capable of excellent accuracy? Both cartridges, the 6.8 Western and .270 WSM, share a 35° shoulder, so in fact, the 6.8 Western is VERY close to the existing .270 WSM, just .080″ short. Ok let’s give them the benefit of the doubt and say they like availability and reliable feeding. In order to make as close to an “apples to apples” comparison of the cartridges as possible, I referenced Winchester’s 2009 catalog and used the provided specifications listed there for the Model 70 Featherweight chambered in .270 Win, 270 WSM, 7mm Rem Mag, 7mm WSM, 300 Win Mag, 300 WSM, 325 WSM, and 338 Win Mag. First, the .300 Win Mag is a lot longer. Factory loads for the 7mm WSM and 7mm Rem Mag often use the exact same bullets fired at virtually the same muzzle velocity. On the other hand, the 300 WSM has a slightly higher maximum SAAMI pressure than the .300 Winchester Magnum (65,000psi vs 64,000psi). 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. LMAO. Choose a rifle weight appropriate for the loads you intend to shoot. 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. program or calculated from the formula given in the Lyman Reloading Handbook, 43rd Edition. The .300 Winchester and .300 Winchester Short Magnum are suited for very similar hunting situations, with one small caveat. The .270 Winchester is one of the most popular centerfire rifle cartridges in North America and is very likely among the Top 10 (maybe Top 5) best selling rifle cartridges in the United States each year. On paper, the Winchester Short Magnums are very closely matched with their standard length cousins. 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. Glad to see the WSM family got some attention. Compare the 180 gr 30-06 verses the 150 gr 270 WSM and you get the same or possibly less recoil and better ballistics all around except energy with the 270 WSM. Is it significantly more accurate than the .270 Winchester? My subjective impression is that, with a well designed stock, recoil velocity above about 10 fps begins to feel like a sharp rap on the shoulder rather than an abrupt push. The situation is a little different with the Winchester factory load and the 325 WSM has the edge in retained energy. The .338 Winchester Magnum and 325 Winchester Short Magnum cartridges have similar, external ballistics, especially at ranges inside 300 yards. This results in a little bit less recoil. For the majority of hunters, the .338 Winchester Magnum is the more practical choice. The photo below does a great job of showing the differences in external dimensions between the 300 Winchester Magnum and the 300 Winchester Short Magnum. Specifically, the new 270 WSM, 7mm WSM, 300 WSM, and 325 WSM cartridges were all designed to use a very compact case that would fit in a short action rifle. No ignition issues or hang fires because the case was full. Is the 270 WSM capable of excellent accuracy? Is it significantly more accurate than the .338 Winchester 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. Your 12 is a harder felt recoil although I've always considered a rifle to be a sharper more punishable recoil. 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. Both loads are compared when fired from a Winchester Model 70 Featherweight rifle. About in between the .30-06 and .300 WM in terms of recoil. 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. After all we wouldn’t want to hurt someone’s sensitive feelings. The generally better feeding and overall reliability of most 7mm Remington Magnum rifles is a big plus as well. On the other hand, that’s not a gigantic advantage in favor of the 270 WSM either. However, there are many, many other factors that influence accuracy more than that one trait. For example, so called “magnum actions” are even longer than standard actions. I want to purchase the 7mm wsm and the 325wsm before this happens. Hunters who look hard enough can probably find what they need, but it can be challenging sometimes. 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? Maximum pressure obtained from SAAMI (p23, 24, 28, 30, 31, and 32). On the other hand, if a light weight rifle is less important and if you don’t have any issues with a standard length rifle action or just prefer an older and more established cartridge with a larger variety of ammo and rifle choices, then go with the .300 Win Mag. 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. mag, 300Win. 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 .284″ bullets. Felt recoil will vary from shooter to shooter and rifle to rifle, but free recoil energy is still a useful way to compare cartridges.Interestingly enough, all four loads have almost identical recoil. 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. 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. However, Winchester likely made an attempt at doing just that, but since the case is optimized for the 300 WSM, they probably were not getting the desired performance with a .338″ bullet and opted for a .323″ compromise instead. There is a decent selection of factory ammo available in the cartridge from companies like Federal, Hornady, and Winchester. Scroll down or click the appropriate link below to jump to the specific comparison you want to learn more about. The .300 Winchester Magnum and 300 Winchester Short Magnum cartridges have essentially the same external ballistics. That heavier and more aerodynamic bullet retains energy better at long range and the edge in kinetic energy grows as the distance increases. I am a fan of the WSM 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. This is illustrated in the table below comparing Nosler Trophy Grade and Winchester Power Max Bonded factory ammunition loaded with 200gr AccuBond (.450 BC) and 220gr (.403 BC) Bonded Rapid Expansion Hollow Point bullets in 325 Winchester Short Magnum and 225gr (.550) AccuBond and 200gr Bonded Rapid Expansion Hollow Point (.323 BC) bullets in .338 Winchester Magnum. As you can see, the two Federal Premium loads used the exact same 180 grain bullets fired at the same velocity. 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. However, the two cartridges have some similarities as well. Note:For an expanded version of this table showing more calibers and many more loads, including British, European, wildcat, obsolescent American and proprietary calibers, see the Expanded Rifle Recoil Table. While rifles chambered in both cartridges are manufactured with both 22″ and 24″ barrels, the shorter 22″ barrel length is more common with the .270 Winchester and the longer 24″ barrel is more common with the 270 WSM. The longer you shoot, and the harder the rifle kicks, the more likely you are to flinch. Both cartridges are also well suited for hand loaders and reloading components for the .270 Winchester and 270 WSM are widely available. This is not a hard and fast rule, but it is a common occurrence with these two particular cartridges. 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. At the same time, the 300 WSM has most closely lived up to the hype, which explains why it’s far and away the most popular of the bunch. But I wanted to get the entire line of Brownings AB3 Hunter’s.. so I have to find N.I.B. Once again, the 7mm WSM has a little bit less wind drift, but it’s an extremely small difference between them that’s due entirely to the slightly faster muzzle velocity of the Winchester Short Magnum cartridge. Proponents of the WSM cartridges also argue that this results in a shorter and wider powder column that’s more quickly ignited by the primer and burns more evenly than a comparable amount of powder in a longer and more narrow column. 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. While virtually every big ammo manufacturer produces factory hunting ammo for the .338 Win Mag, only Nosler and Winchester Ammunition currently produce 325 WSM hunting ammo as part of their Trophy Grade, Expedition Big Game, Power Max Bonded, and Super X lines (loaded with the AccuBond, E-Tip, AccuBond CT, Bonded Rapid Expansion Hollow Point, and Power-Point bullet respectively), For those reasons, most sporting goods stores usually carry ammunition for the .338 Win Mag, but 325 WSM ammo can be significantly harder to find. Same weight bullet, same velocity = same recoil. Is the 7mm WSM capable of excellent accuracy? However, while that may well contribute somewhat to improved accuracy, there are many other factors that influence accuracy to a much larger degree. That’s not to say that the .338 Win Mag won’t work for that sort of hunting because it certainly will. 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. It does, however, mean better. My son has a 270 Win in a M70 Classic featherweight stainless. That extra velocity makes a bit of a difference in terms of wind drift and overall trajectory to be sure, but that slightly flatter trajectory is less important in this day and age of laser rangefinders, particularly if you have a scope equipped with a bullet drop compensating dial. Have you ever considered the 270 WSM? This should tell you something.) 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. It’s just that it doesn’t offer a significant improvement in power over the 325 WSM at close range, but still has more recoil. What about when comparing bullets of the same or very similar weight? The data used to compare the trajectory and wind drift of the cartridges was obtained from Hornady (here, here, here and here), Federal (here, here, here, here, here, and here), Nosler (here), and Winchester (here). The modern “magnum era” began in earnest with the introduction of the 7mm Remington Magnum and .300 Winchester Magnum cartridges during the 1960s. For that reason, the .338 Winchester Magnum is probably the closest comparison to the .325 WSM that’s in common use in North America. is several pounds heavier and I use around 11-12 grs. For those reasons, while the .338 Win Mag can generally hold a little more powder, the two cartridges actually have similar case capacities (depending on the manufacturer of course). In 1909, the British Textbook of Small Arms stated that 15 ft. lbs. I’d have to compare the ballistics to double check I’ve always thought the 270wsm was similar to the 7mm Mag. In the real world, firearms chambered for less powerful cartridges are typically built lighter than firearms chambered for more powerful 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. 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. 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. that is why I went with the lighter 270 in 130. Both cartridges will work really well on whitetail and mule deer sized game out to several hundred yards. However, the same rifle in .338 Win Mag is advertised at 7.75 pounds and 46.75″ long overall (because it has a 26″ barrel instead of a 24″ barrel like the 325 WSM rifle). mag and the 6.5 Creedmoor and a few others. Browning BAR ShortTrac Rifle 031022248, 270 WSM, Semi-Auto, 23 in BBL, Mossy Oak Break Up Infinity w/Dura-Touch, 3 + 1 Rd Hinterland #: 26145 MFG #: 031022248 Is it significantly more accurate than the .300 Winchester Magnum? The .270 WSM is also credited with enhanced accuracy due to improved ignition and burn uniformity. This specific model weighs 7.25 pounds when chambered in both 7mm WSM and 7mm Rem Mag. Make sure you subscribe to The Big Game Hunting Podcast and follow The Big Game Hunting Blog on Facebook, Instagram, Twitter, and YouTube. It also creates a 15% higher recoil, with more muzzle blasts. Like I said, they’re all well designed and very capable hunting cartridges. Additionally, the .338 Winchester Magnum is a traditional belted magnum while the 325 WSM has a rebated rim and no belt. The 270 Winchester Short Magnum (WSM) cartridge concept proved that “magnum” doesn’t always mean bigger. Again, probably not. Copyright © 2021 Big Game Hunting Adventures LLC | All Rights Reserved. First, let’s talk about the history of the Winchester Short Magnum (WSM) line of cartridges and what the company was trying to achieve. 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. run from 55 to 60 grains of powder while in my .270 WSM they run from 62 to 68 grains! 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. 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. 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. Both are also very good choices for hunting game like bighorn sheep, mountain goat, Himalayan Tahr and chamois. All recoil values have been rounded off to one decimal place. I’m not sure if it cracks the Top 10 best selling rifle cartridges in the United States each year, but it’s likely in the Top 15 or Top 20. 12 gauge, 2.75" (1 1/8 at 1200) @ 23 ft/lbs felt recoil They list the .270 WSM (150 at 3000) 8.0 lb rifle @ 18.9 ft/lbs of recoil. It can be measured or computed empirically and has been for this recoil table. However, even though the 7mm Mag is derived from the .375 H&H Magnum and itself uses a fatter case than cartridges like the .270 Winchester and .30-06 Springfield, the 7mm WSM still has a significantly fatter case with less taper and a steeper shoulder angle (35 degrees vs 25 degrees).Even though the 7mm WSM uses a larger diameter case, the 7mm Rem Mag uses a relatively large diameter case itself and is significantly longer. My 270 WSM is a Tikka T3 Lite with a Sims Limb Saver recoil pad on it. In today’s world, better to sugar coat it than to sound like we may be mocking. This means I will earn a small commission (at no extra cost to you) if you make a purchase. The same goes for game like mountain goat, bighorn sheep, Himalayan Tahr, and chamois. 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 does indeed have a flatter trajectory and more resistance to wind drift than the .270 Winchester. Probably not. In addition, the effects of recoil are cumulative. For instance, the vast majority of 7mm Rem Mag factory loads shoot bullets in the 139-175 grain range. Below you can see the differences between the 325 Winchester Magnum and the .338 Winchester Short Magnum in terms of external dimensions. .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. However, regardless of the firearm in question, rifles chambered in .270 Winchester can usually hold an extra round or two in the magazine since that cartridge has a slimmer case. After all, the .300 Win Mag is capable of excellent accuracy itself and is generally very highly regarded in that area as well. Both cartridges are also well suited for hand loaders and reloading components for the .300 Win Mag and 300 WSM are widely available. In my time in Missouri with the 6.8 Western, I found recoil … Basically, the .270 Winchester and .270 Winchester Short Magnum are best suited for the same hunting situations. Most manufacturers produces rifles chambered in .338 Win Mag, so it’s not too difficult to find a good rifle in that cartridge. Note: these are not the only broad categories of rifle actions. Or if I was wanting a short action. Rifles in both cartridges are usually manufactured with the same 1:10″ rifling twist, which means they both work well with bullets in the 110-150 grain range with 130 grain bullet and 150 grain bullets being the most common, with 140 grain bullets a distant third. Prospects for new rifles chambered in 7mm Winchester Short Magnum are already pretty dim and it’s possible that things will also be heading that way soon with factory ammo. However, the 300 WSM could have an advantage on those sort of hunts because it’s available a smaller and easier to carry rifle. However, Winchester made a big splash with the .300 Winchester Short Magnum in 2001 and followed up with the .270 Winchester Short Magnum and 7mm Winchester Short Magnum cartridges in 2002.
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