Anytime you bring up two cartridge types or even two different rounds of the same cartridge, the argument for which is more accurate eventually rears its ugly and opinionated head. Below, we have listed the average bullet kinetic energy for the 20 rounds of each cartridge that we have compiled. Both cartridges have a similar recoil; I feel that the differences in felt recoil are more attributable to stock design and fit than to recoil energies generated. At any range, both of these cartridges perform very similarly. I’ve had some WSM rifles that fed reliably every time, and others that were a royal pain. But you’re not likely to notice or benefit from this unless you’re trying to shave .001 inch off your target group.
Loosely based on a shortened .404 Jeffery, this short-action cartridge was designed and hyped to match the ballistics of its older Winchester sibling in a lighter rifle with a more rigid action.
It holds off on the recoil energy just slightly compared to the other rounds but still provides one of the flattest trajectories compared to the other .300 WSM rounds that we … Not even in an auto-loading Browning BAR. We will do this by taking a look at several ballistic as well as other performance characteristics of these cartridges. So, yes, there’s a bit of hype swirling ’round the 300 WSM, but even without it, this is a fine, efficient cartridge for throwing 150- to 210-grain .308 bullets at muzzle velocities running 3,300 to 2,900 fps respectively. However, the 7mm Remington Magnum has a gigantic advantage in terms of availability and variety of rifles and ammunition. 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. These are interesting cases where both lines of ammo use the same style bullet for both cartridges, but the Nosler ammunition uses a heavier bullet for the .338 Win Mag and Winchester uses a heavier bullet for the 325 WSM. Get our PDF with 13 pistol & rifle targets (worth $48) including expert instructions for FREE! And by lighter, it’s usually around half a pound to a pound difference in weight. Compare this to 19 ft. lbs.
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. For those reasons, sporting goods stores usually carry ammunition for both cartridges. Being short and squat, the angle of the magazine follower can play a huge role in whether or not the rifle will feed smoothly.
Get the American Hunter Insider newsletter for at-a-glance access to industry news, gear, gun reviews, videos and more—delivered directly to your Inbox. If we look at individual rounds, the .300 WSM has two round at .45 and below while the .300 Win Mag only has one that falls below .5. Maybe, but I doubt that it’s a big enough difference to really matter. Mag. As a general rule, you want at a minimum of 1,000 ft.lb force when trying to take down larger game, and probably more in the 1,500+ range when talking about bear, elk, and moose which these cartridges are often used for. 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. The extreme spread of velocity was 150 fps over 10 shots with H4895 and the Nosler 125-grain Ballistic Tip listed in the load table. 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. Knowing how the round performs let’s you understand if it will fit the hunting or shooting situation at hand. 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. As you can see, both AccuBond loads have similar ballistics, but the 325 WSM AccuBond load has a slightly flatter trajectory while the .338 Win Mag AccuBond load retains more kinetic energy at all ranges. While we will look at each separate from the others, they should all be taken into account when determining which cartridge would be more advantageous in a certain situation. As far as an advantage for one cartridge over the other, there is never more than an inch of difference between the averages of the two cartridges at any point over the bullet’s range. At 300 yards, all of these rounds still have well above 2,000 ft.lb with several rounds, including both .300 Win Mag and .300 WSM, still carrying more than 2,500ft. This specific model weighs 7.25 pounds when chambered in both 300 WSM and .300 Winchester Magnum. First, the 7mm Remington Magnum cartridge is significantly longer. This section is probably going to carry more weight for hunters rather than just competition shooters, but it’s never a bad thing to know as much about a cartridge as you can. Once you get used to cycling your action, regardless its length, it’s no big deal. The cartridge’s short case and neck (which is still longer than the .300 Win. 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. It drove the .300 Holland & Holland completely out of the lime light, taking the crown as the preeminent .30 caliber magnum. From the muzzle out to 200 yards, the .300 WMS has a slight advantage when looking at the averages though the difference is less than 100fps. 270 WSM vs 270 Winchester Now, there are more factors that go into a bullets ability to drop animals cleanly, such as the bullet design and its ability to cause serious wounds based on how the bullet expands when it reaches the target. 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. A lot of old guys who load 4350 propellant started handloading as young fellows using 4350. Felt recoil will vary from shooter to shooter and rifle to rifle, but free recoil energy is still a useful way to compare cartridges.
If you are on the range, we like the .300 WSM Barnes VOR-TX TTSX 165gr round. With that, in this set of ten rounds, the flattest round was a .300 Win Mag round, but we also saw a .300 Win Mag round that was the steepest in bullet drop. The 7mm Winchester Short Magnum very likely does gain some accuracy benefit from its shorter and fatter powder column. While recoil energy determines how hard the blow to the shoulder feels, recoil velocity determines how abrupt the blow to the shoulder feels. Both cartridges have options with .6+ BCs which are going to be intriguing for the long range guys. Both of these cartridges have the potential for long range shooting applications, so while we are discussing velocity, we wanted to look at the distance these rounds can travel (approximately) while maintaining supersonic flights. So there is an argument for consistency in action length if you own more than one rifle. Due to the long running popularity of the .270 Winchester, there’s a plethora of quality bullets to choose from for both cartridges. 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 325 WSM is 1/2″ shorter overall. Mag. Absolutely. Seating them farther out makes the cartridge too long to fit short-action magazines. This is very likely the single most commonly used bullet size in North America, so there’s an excellent bullet selection for both cartridges. Instead, we want to present an unbiased view of these two cartridges so that you can have a better basis for deciding which one better suits your shooting needs. This is not always the case and some 270 WSM rifles feed exceptionally reliably of course, but it’s likely more of an issue with that cartridge that’s not often encountered with the 270 and its longer, slimmer, and more tapered case. While we saw slight increases in the averages for SD and bullet momentum for the .300 WM, the .300 WSM were not far off at all and there are rounds that provide high performance in both categories. 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. We can’t quantify this in our .300 Win Mag vs .300 WSM comparison.
As far as case capacity goes, the WSM runs on a bit less powder, but not enough to really make any sort of long term difference.