We have listed the average cutoff for supersonic flight in the table below. Both are very capable and popular cartridges and both pack a good punch. This transfer is also affected by how the bullet reacts on impact, such as how the bullet expands. Size matters, so let’s stick to the two older magnums. The sectional density correlates with the amount of penetration a bullet will have on the target, and since we are not looking at bullet types and designs in this article, we think the SD is a good means of comparison for two cartridges. That’s a difference of 478ft.lb. We also do not see any trend towards one cartridge having a flatter trajectory than the other. We are interested in how long these rounds can maintain supersonic flight because it influences the calculations you will have to make to be accurate with long range shots. UMC Handgun; Hog Hammer Handgun; HTP Copper Handgun; Subsonic; Performance WheelGun; High Terminal Performance (HTP) Ultimate Defense Compact Handgun Loads Because of this, we can easily compare two cartridges rather than having to look at the individual bullet types used. When we look at the price of the 7mm Rem Mag vs .300 Win Mag, it can vary from round to round. Ready, aim, fire! 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. And when we say highest or lowest performing, we mean that in regards to only the momentum numbers. We kept both of these cartridges with being fired with a 9lb firearm, and the powder loads were selected from load data. Firearm Setup. The higher the momentum, the more the bullet can penetrate after encountering resistance. 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. With that type of similarity, it’s hard to even say it’s an advantage. Either will neatly terminate deer, sheep, elk and larger game so long at the shooter delivers the right bullet to the right spot. While the three .300 Win Mag rounds maintain their lead; the other two are tightly clustered with several 7mm Rem Mag rounds. With two decades of chasing all manner of upland game, hooved mammals, strutting gobblers, and any small game that can fit in his Dutch oven, he hopes to offer new ideas and viewpoints on hunting and firearm concepts and traditions. 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. And receive our newsletter with the best articles covering guides, guns & gear. With that in mind, let’s bring in a more diverse selection of rounds for each cartridge and see if we still see similar trajectories. G1 Ballistic Coefficient Must be between 0.001 and 1.0. This round maintains over 2,000fps throughout a 500-yard flight, which is more than enough to cause proper expansion of the ballistic tip bullet. We used a ballistics calculator to generate the recoil energy (ft.lb) generated from firing each of the ten rounds that we have chosen for comparison. Neck: 8.6mm 5. We really like the lighter 7mm Rem Mag rounds for these game animals. Rifling Twist: 1:9 to 1:10 3. So why exactly is trajectory important, more specific, why is how flat a trajectory is so important? Though the averages give a slight advantage to the 7mm Rem Mag in flat trajectories, especially as it moves out to the 600 and 700 yards range, the two top performing rounds at each yardage marker was a 7mm RM and a .300 WM. While this is fine for comparing specific rounds, it doesn’t mean that the numbers are set in stone. And we are sure its performance also had something to do with its decades of success. 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. We can do the same exercise, but instead look how the weight of the bullet affects the SD. Copyright Ron Spomer Outdoors © document.write(new Date().getFullYear()) In our opinion, you can become accustomed to any recoil within reason it still stands that certain amounts can cause you to flinch or close your eyes before a shot. When you buy through links on our site, we may earn an affiliate commission. And, like the smaller sample set that we just looked at in our graph, the difference between the two cartridge’s average is less than 100fps at each yard marker. used the 7mm alot from the 80s and for me it was a pretty hard kicker not much less than a .300 Win Mag. It has one the best muzzle velocities and BCs of all the rounds we looked at so you have excellent downrange ballistics, including a flat trajectory. Factory load options might change your mind. And like we have mentioned before, using a proper bullet and putting it in the right spot can make up for lack of energy. Below, you will find the numbers for the larger data set. And what shouldn’t be lost, is that while the .300 Win Mag does seem to have more KE, the amount that the 7mm RM rounds generate are not insignificant. We did feel the need to mention it, but both the 7mm Rem Mag and the .300 Win Mag cartridges can drive nails with some practice on your end, and they can do it from a distance. Use this ballistic calculator in order to calculate the flight path of a bullet given the shooting parameters that meet your conditions. Because a lot of the discussion is going to revolve around these ten rounds, and because we are very aware of the possible issues when trying to use a small sample size to extrapolate performance to a much larger field, we have compiled extra rounds for each cartridge. With the larger sample size, we see the same trend that we saw above. November 25, 2019. Base: 12.0 mm From the first look, there are no significant differences between 7mm Remington Magnum and .30-06 Springfield when it comes to profile. 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. Stopping power is extremely important in a hunter’s decision for a cartridge. In fact, we don’t think there is a big enough difference in these categories to make you lean one way or the other regarding accuracy from the data we have looked at here. Those are always the deciding factors: right bullet, right place. A mature bull moose is going to require more penetration than a whitetail deer. This difference between the two leads us to rounds that have very similar SDs. BONUS OFFER: Get your 500 Page Ammo Comparison Handbook (worth $43) for FREE right into your inbox. And with the internet at your disposal, finding exactly what you need has never been easier. 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. We did see slightly higher sectional density numbers, on average for the .300 Win Mag and pretty significant differences in the momentum data with the edge going to the .300 Win Mag as well. A rule of thumb that a lot of shooters go by is that 20ft.lb of recoil energy can influence the shot and even be uncomfortable for some shooters. Again, this is all relative and depends on who is holding the gun. And that is not to say that the 7mm RM rounds are not going to penetrate well. We have graphed the bullet momentum of our ten rounds and graphed them below (Graph 9). In ballistics catalogs the point of maximum bullet rise is often called the mid-range trajectory, or sometimes the maximum ordinate. While the .300 Win Mag overall has higher bullet energy, the differences are not too extreme. After we have examined these sections, we should have a much clearer understanding of where these cartridges excel and where they fall short and will let us begin teasing apart applications one cartridge might be favored over the other. When we looked at averages of the smaller set, the 7mm RM had a .01 difference in the averages of the rounds. Your shots may be shorter distance, but it is hard to make up for bullet weight. In my opinion both the SAUM and WSM … Best Concealed Carry Insurance [Comparison Chart], If you’re looking at a cartridge comparison, you are going to end up looking at the ballistic categories. By the time they reach the 500-yard mark, that difference is nearly cut in half to 224.4ft.lb of difference. By Ron Spomer. In this next section, we are going to look at several sub-categories of stopping power. That being said, unless you are a target shooter, you may not even notice the difference between the two. Here are the relative recoil levels from both 8-pound rifles in the above scenario: Recoil Impulse          Recoil velocity of rife              Free recoil energy, 7mm Rem. … Bullet: 7.2mm 4. Cartridge availability and price are also going to be a consideration. It also means that if you look around at handloading website, you are going to see numbers that sometimes vastly outperform the rounds we will be looking at in this article. When the powder in the casing is ignited, and the bullet is forced down the barrel and down range, that energy created from the burning powder is carried by the bullet. A bullet’s design, their BC, and the muzzle velocity all influence the trajectories. Mag. The belted cartridge is not going to be quite as accurate as a rimmed cartridge by design. Again, with the larger set of rounds, we see the sameresults from earlier. WARNING: In factory loaded ammunition, you’ll be hard pressed to find 300 WM ammo with bullets heavier than 180 grains. 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