That being said, unless you are a target shooter, you may not even notice the difference between the two. And you can’t discount the role recoil can play in accuracy. It is important to make clear that we are looking at recoil energy and not the actual kick or felt recoil, though increased recoil energy for one round over another will often translate to increased felt recoil of the same round. The majority of bullet weights used for the 7mm rem mag rounds for hunting purposes fall between 150 and 180gr though there are outliers of lighter and heavier bullets. Given that, I would happily and eagerly hunt anything with either cartridge — even charging brown bears. While the .300 Win Mag overall has higher bullet energy, the differences are not too extreme. More Hunting. For the .300 Win Mag, our choice goes to the Nosler Trophy Grade AccuBond Long Range 190gr. We hope that this cartridge comparison of the 7mm Rem Mag vs .300 Win Mag has given you an unbiased look at some of the ballistic and other performance properties of these two rounds. 14.07 fps                              24.6 foot-pounds, 300 Win. For instance, the vast majority of 7mm Rem Mag factory loads shoot bullets in the 139-175 grain range. With that, we feel it’s important to look at the short range trajectories (Graph 5). It has a rebated rim, bottleneck casing with a 1:9.5 twist on a large rifle magnum primer. The velocity is an interesting and critical performance spec for any cartridge comparison. Both cartridges were released to the public hardly a year apart and further adds to the rivalry that has been raging. For the .300 Win Mag rounds, all of the them leave the muzzle with over 75lb/ft.s of momentum while all of the 7mm RM rounds are below the 70lb/ft.s mark. Given that the cartridge is still around tells you that it is able to bring down large game efficiently. Due to the fact that the 7mm WSM duplicates the performance of the .280 Remington while being very similar to the 7mm Remington Magnum, the reader is directed to these texts for bullet performance. In this next section, we are going to look at several sub-categories of stopping power. Before we list some these differences between the averages of the two cartridges, it’s important to keep in mind the applications you plan to use one or both cartridges for. The case and overall length of the.300 Win Mag are slightly longer than the 7mm RM, and its overall case capacity has a larger volume. You can cherry pick a round from each and see quite a bit of difference as we did earlier, but there are a lot that carries very similar energies, and we saw that as they travel downrange they even out even more. For bigger and more dangerous game, you might like the kinetic energy and larger bullets of the .300 Win Mag but as we discussed in the previous sections, we would be comfortable with either cartridge in these hunting scenarios. We’ll pretend both rifles weigh 8-pounds as shot. If you look around the internet long, you will find that there are circles of devout followers and also unbelievers in the .300 Win Mag for various reasons. Below we have listed our ten selections to be used in this article. WARNING: In factory loaded ammunition, you’ll be hard pressed to find 300 WM ammo with bullets heavier than 180 grains. As the species increase in size so does the amount of energy. For others, the trend of the 7mm RM losing altitude at a slower rate than the .300 Win Mag as you increase the distance is very important. Now, 100fps for some might be a bigger deal than others, but keep in mind it’s only an average. Astute readers will notice a few things from these numbers: Our current fad for long range shooting makes these studies in ballistics fascinating, but at “normal” hunting distances, neither cartridge has an appreciable advantage over the other. Firearm Setup. The .300 WM rounds are generating more momentum from the muzzle out to 500 yards. If you are wanting a BC in the .05+ range, there are options for that with both of these cartridges. Below you will find the velocity averages for the two cartridges. That’s the year Winchester brought to market its now famous 300 Winchester Magnum. The 7mm Rem Mag had on average slightly higher BCs and slightly flatter trajectories out past 500 yards than the .300 WM rounds, but as we stated during those discussions, there are rounds for both that perform better than others. It is also not uncommon to see slightly different performance firing these rounds from your rifle compared to computer generated data. When you know when these effects start occurring, you can adjust accordingly or go with a round that might give you more flight time at these speeds. Before we launch into the short and long range trajectories, we wanted to step back and show the trajectory of two similar rounds, one for each cartridge, that uses the same bullet design and similar weights, as these cartridges allow, that come from the same manufacturer. Why 7mm Rem Mag over the new 7mm WSM? When thinking about how much penetration is necessary, you also have to think about the type of game you are hunting. When we look at this graph, we see a clear and distinct difference in recoil energies produced from these two cartridges. Just as with the smaller set of rounds we just looked at, these two cartridges are nearly identical in their trajectories. Tomahawks Are Back: These American Relics Have Seen a Resurgence in Military and Survival Situations . We do see the difference shrink by a few lbs/ft.s but overall, the .300 Win Mag seems to have the advantage if you are wanting more momentum. The .300 Win Mag is not only a hunting caliber but is also favored by long range competitive shooters. In our opinion, it can’t be denied that this cartridge can fill several hunting needs and is the reason for its continued existence and in our opinion, one of the best magnum rounds of its caliber class. It is also available in a wide array of bullet styles which gives it a lot of versatility. The averages of the rounds for each cartridge have a difference of less than .4”. There are 7mm Rm rounds that outperform some .300 Win Mag and vice versa. While both of these rounds can function in long range precision shooting, the majority of users are going to be using them in a hunting capacity. The Roosevelt elk of Western WA tend to have smaller racks & bigger bodies than the usual Rocky Mountain elk. Parent Case: .375 H&H Magnum 2. 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