Like most ballistic and other performance specs we have looked at between the 7mm Rem Mag vs .300 Win Mag, there is not a whole lot of difference between the two cartridges. vs. .300 Ultra Mag. We’re don’t mean to insult anyone’s intelligence, and we are probably speaking to the choir here, but a bullet’s flight path is not a straight line but rather a parabolic shape. When thinking about how much penetration is necessary, you also have to think about the type of game you are hunting. Unlike the last couple of performance categories we have looked at, here we see a distinct difference between the two cartridges more so than just between different rounds. 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. This cartridge can be packed with large amounts of powder giving it a huge advantage in velocity and the ability to carry a large amount of energy over a greater distance. Still, it is accepted that 1,000ft.lb of energy is a good mark for deer while 1,500ft.lb is more suitable for elk. If the round is not paired with the correct twist rate of the barrel, the bullet can be highly unstable in flight and become highly inaccurate. Another guy uses a 7mm. 7MM MAG vs 300 WIN MAG - Cinder Block Test 4. At the 200 yard mark, all ten of these rounds are clustered very tightly with a difference of only .7” between the flattest and steepest round. I’m talking 7mm-08 vs. .308; .280 Rem. And why wouldn’t it? And you can’t discount the role recoil can play in accuracy. So why exactly is trajectory important, more specific, why is how flat a trajectory is so important? While the three .300 Win Mag rounds maintain their lead; the other two are tightly clustered with several 7mm Rem Mag rounds. 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. can use bullets of 120 grains, but things usually top out at 175 or 185 grains. Though, for hunting purposes, just about all of the rounds for these two cartridges are going to be designed to hold together well and over controlled expansion. Get our PDF with 13 pistol & rifle targets (worth $48) including expert instructions for FREE! Recoil wise, according to my "calibrated shoulder", the 7mm falls about mid way between the 30-06 and the 300 Win Mag. In the larger data set, the .300 Win Mag had a .006 advantage over the 7mm RM rounds. Both cartridges were released to the public hardly a year apart and further adds to the rivalry that has been raging. And, this is of course omitting the type of bullet that is being fired which in the field, is going to have to be taken into consideration. It’s indisputable that a .30 caliber delivers more energy than a comparable 7mm. I have found the recoil between the two to be very similar, with rifle weight playing a larger part than the cartridge does. Sniper Country is reader-supported. These would be my top 2 choices for a “do it all” rifle 338 LM- Shot plenty of deer with it when I owned one. At the 300 yard mark, we are looking at insignificant differences between the two cartridges. Trying to determine which cartridge is more accurate is always a task that makes us feel a little dirty. The velocities produced were understandably lower than those of the 7mm Remington Magnum—as the powders available in 1912 certainly weren’t the same as those in 1962—but the cartridges are nearly identical, with the H&H design having a bit more taper. and 300 Win. It influences recoil, trajectory, and it even influences stopping power of the bullet in several different ways. In this case, the 7mm Rem Mag shows slightly less bullet drop than the .300 Win Mag round and even at their most distinguishable range, we are only looking at around 5” difference. If your favorite round is not on the list, it’s not because we don’t think it’s a round worthy to take in the field. 'Overbore' is the favorite term of the detractors. 7mm mag vs 300 Short mag by: PB I have owned a Remington 7mm mag rifle(s) and used it almost exclusively for hunting deer, elk and moose since 1968. Some of our reasons for selecting this round is the terminal ballistics and the stopping power. A 175-grain or 180-grain in the 7mm Rem. What we are saying is that the differences in performance shown here will translate to differences in performance for you when using the same firearms chambered for each cartridge, so the comparisons made here are still valid. With just two rounds, it might be easier to get an overall view of how these two cartridges stack up before we throw eight other rounds into the mix. Moment is simply how well an object in motion will stay in motion. But I am really curious about what your thoughts are on the 7mm-300 WM vs. the 338 Lapua Mag on the effective external and internal ballistics for hard target interditions out to 1500m+ on these two rifles. 7mm Remington Magnum A stellar choice for many reasons. Look on any forum discussing shooting and the ballistics of a certain cartridge, and you are bound to see the topic of trajectories pop up. Mag. Here are the differences in averages of the 7mm Rem Mag vs .300 Win Mag; 300yds (.34”), 400yds (1.32”), 500yds (2.62”), 600yds (3.08”), and 700yds (6.96”). There are 7mm Rm rounds that outperform some .300 Win Mag and vice versa. It might be a bit of overkill for medium sized game and you might get a bit more damaged meat, but there is little doubt that it will put them down. The 7mm Remington Magnum was the first on the scene, released in 1962 in conjunction with the new Model 700 rifle. Ditto the.300 Win. Velocity is also a key component in a bullet’s ability to expand, but for now, we are just going to stick with comparing the energies of the rounds involved. can use bullets of 120 grains, but things usually top out at 175 or 185 grains. A mature bull moose is going to require more penetration than a whitetail deer. 0. Before we move on to the trajectories of these two cartridges, take a look at the average BCs of the larger sample size. We think the 168gr bullet is a great weight for hunting purposes as it has a manageable recoil. By Chuck Hawks. On average, the 7mm Rem Mag rounds have a SD of .279 while the .300 Win Mag rounds have an average SD of .289, a hundredth of a difference. 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. Let’s take a look at the larger sample set and see how the two compare. As the names imply, the .300 Win Mag takes a 30-cal (.308″) bullet, while the 7mm Rem Mag takes a smaller caliber (.284″) bullet. You might see slower velocities as well as changes in bullet energy and trajectory. Below you can find some very, very brief histories of these two cartridges. Overall, both rounds are really overkill for these game animals stopping power wise, but that extra range can be a game changer. When you have two cartridges that overlap in a lot of shooting situations each category deserves some consideration. And when we say spread out we are still looking at a range of less than 2.5”. And like we have mentioned before, using a proper bullet and putting it in the right spot can make up for lack of energy. With these two cartridges, we see fairly similar limits for supersonic flight though the 7mm RM rounds have, on average, 36 more yards of supersonic speed. As we move out the 300-yard mark, there is a little more spread between the rounds but still no clear cut advantage for one cartridge over the other. The .300 Win Mag, on average, is generating around five ft.lb more recoil energy than the 7mm RM rounds and if you look at the individual rounds (not shown) they tend to group pretty tightly by cartridge type though there are some outliers for both cartridges as is often the case. He's convinced that most debates about their relative merits are much ado about little. We are again seeing that both of these cartridges are performing very similarly. 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. Penetration is another component to a bullet’s stopping power that we want to address in this article. 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. Both cartridges maintain supersonic speeds over a 500-yard range and will maintain that rating over several hundred more yards. Given that the cartridge is still around tells you that it is able to bring down large game efficiently. No surprise there, as both the 7mm and .308″ bore diameters have long been heralded as the two most versatile available, giving hunters all sorts of flexibility regarding the game animals they will handle. Of course, it might also tell us that both are more than capable of doing the same thing efficiently and effectively. The .270 Winchester vs. the 7mm Remington Magnum. Winchester’s marketing—and the availability of both rifles and ammunition—saw the rapid rise to success of the .300 Winchester. When we look at this graph, we see a clear and distinct difference in recoil energies produced from these two cartridges. While hand loading and the art of balancing the various components that go into a cartridge is a topic worth discussing, it is beyond the scope of this article. 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. We have also included an additional 400 yard marker as there are certain hunting situations where this range can be a normal shooting distance. For the 7mm Rem Mag rounds, we are big fans of the HSM Trophy Gold VLD Berger 168gr round. In fact the 300 Win Mag is about the breaking point that most folks can handle before recoil becomes an issue. Ran the 300’s more because I could suppress them. It's everything from a Varmint Blaster to an Elk Taker, and several other things in between. We have listed the average cutoff for supersonic flight in the table below. The .300 Win Mag rounds show a slightly higher sectional density than the 7mm Rem Mag rounds. As you can imagine, this makes the BC a relevant piece of information for both long range competition shooters and hunters alike. Understanding your bullet design, how it expands, and the velocity needed for proper expansion and penetration is a huge can be the difference between a clean kill or an injured animal you have to track through the night. This difference between the two leads us to rounds that have very similar SDs. The .300 Win Mag is not only a hunting caliber but is also favored by long range competitive shooters. Each cartridge has cheaper boxes of ammunition and each has more expensive boxes. by Philip Massaro - To do this, we have selected five popular rounds from each cartridge that include several different bullet weights and intended applications. We also hope that you have come to the same conclusion as we have after researching these two cartridges. 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. We also do not see any trend towards one cartridge having a flatter trajectory than the other. At the muzzle, the .300 Win Mag rounds have an average bullet energy of 3,640ft.lb while the 7mm Rem Mag rounds have an energy of 3,162ft.lbs. For a more detailed discussion on the .308 Winchester or .30-06 Springfield and how they compare to the .270 Winchester cartridge, or to learn more about how the .300 Win Mag stacks up against the 7mm Remington Magnum, read the articles below: 7mm Rem Mag vs 300 Win Mag: What You Know May Be Wrong. With practice, either one can easily become your go to round. The post-World War II era saw a return to the hunting fields, and a wave of cartridge development followed, with Winchester releasing the .264, .338 and .458 Winchester Magnums in the 1950s, all based on the belted Holland & Holland case shortened and blown out. For penetration, we will actually look at two different metrics, the sectional density and the bullet momentum. Higher BC rounds tend to have flatter trajectories. unseated the .264 Winchester Magnum rather quickly, becoming the darling of Western hunters. The averages definitely lean towards the .300 WM rounds for higher momentum. The .300 Win Mag rounds have an average of 80.0lb/f.s while the .300 Win Mag has an average of 77.12lb/f.s. To engage this 7mm RM vs. 300 WM argument you have to be willing to pick at nits because, bottom line, both cartridges (and many other magnums like them) are winners. We will look at several ballistic categories as well as other performance specs throughout the article, and we hope that in the end, you come away with information for a more educated decision based on your hunting and shooting needs. Mag. And we’re not discounting that method, it can be very valuable, but you just have to be cautious of who you are getting that information from. Nonetheless, the magnums are extremely popular, and the two cartridges herein are possibly the most popular of all. This way, you can have more data at your disposal if you are looking to make a decision, and it will also check our small sample group and help us confirm that the results we are seeing is accurate for the cartridges as a whole. Mag. Which makes the better choice for the hunter? For the sake of clarity and brevity, we decided on only five selections each. From this graph, it is easy to see that these two cartridges show very similar trajectories out to 500 yards.
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