Nothing to base a decision on. Receive our newsletter with the best articles covering guides, guns & gear. Mag. As you can figure out, all these similarities suggest the new 6mm Creedmoor should perform about like the 243 Winchester. For example, the 6.5 barrel life is in the 2500-3000FPS range and the .243 is usually under 2000FPS. This is all from just going off numbers which is only half the story. This difference is even more noticeable at the 500+ yard range when we take out the lighter .243 rounds and just look at the .243 and 6mm rounds of similar bullet weights. We think that the 6mm Creedmoor vs .243 Winchester is a intriguing comparison. Hornady is claiming its 6mm ARC will yield 2,750 fps with a 108-grain ELD-M bullet from a 24-inch barrel. vs. .300 Win. Thanks. The load is fairly mild and is by no means a “hot” load. However, velocity isn’t everything, and pushing a bullet too fast can be detrimental to accuracy. Looking for previous installments of our "Head to Head" series? The heavier .243 rounds and the 6mm CM rounds all carry over 1,000 ft.lb of energy at 300 yards which when placed well, is more than enough for whitetail sized game. It’s one of the first equations you learn in physics class. Over the past decade the 6.5 Creedmoor has become among the most popular long range shooting cartridges available. The barrel life of a 6.5 is a little better than a 6 but neither are anything like a .308. The standard barrel twist rate for the 6mm Creedmoor is 1:7.5” whereas the standard for the .243 Winchester is a 1:10” twist. It’s a fine balance between speed and stability. However, having been with us since 1955, the .243 Winchester is a very effective hunting cartridge, especially inside of 500 yards, and when used on game animals of suitable size and build. When comparing two cartridges that are often used in the hunting world, we like to look at short range trajectories with the optics sited in at 100 yards. The 6mm looks pretty sweet but I think one can use 108 Lupua rounds in 6.5 just as well and get the same amount of speed. If you want a 6mm rifle that will serve you both in the deer stand and for precision shooting, perhaps the 6mm Creedmoor is for you after all; the factory loading are increasing each year—you’ll find loads from Hornady, Federal, Barnes, Remington and even the new Sierra loaded ammunition—and I think availability and selection won’t be an issue. Just a better design! All of these categories including the categories outside of ballistics all go hand in hand and influence each other. Low recoil, a bullet drop of fewer than 100 inches at 700 yards, high-velocity retention, and a BC of 0.536 all make this a great round to take to the range. I also had a 243 that shot very well and really enjoyed the 243. The 6mm Creedmoor vs .243 is a very interesting comparison. All bullets, once fired, carry kinetic energy that is generated by the force of the gunpowder being ignited and the weight of the bullet. Best 9mm Ammo 2019 [Self-Defense & Target], 6.5 Creedmoor vs .243 Win – Cartridge Comparison, Best .40 S&W Ammo: Self Defense & Target Practice. The old 243 Winchester can beat that by about 300 fps. The 6mm Creedmoor is just one of several new cartridges developed to try to improve on the older 6mm rounds and cater to a rapidly growing field of marksmen. It’s tough when trying to compare two different rounds of the same cartridge. There are quite a few heavier bullet weights out there for factory loaded .243 Win ammo in the 100-110 grain weight range. Before we get into any of the performance categories for the 6mm Creedmoor versus the .243, we want to take a moment to just look at the similarities and differences between the two cartridges regarding their specifications. I seem to recall reading (on the GAPrecision site?) I have a Remington with a factory 5R barrel and is has been exceptional. The same trend happens at the 300-yard mark. Inside of that, it exceeds the general guidelines for bullet energy for whitetail sized game. Bottom line is both will work just fine. While the latter two designs are viable hunting cartridges, neither of them really challenged the .243 Winchester’s position at the top. The Creedmoor is a little shorter so you have a shorter OAL to load heavier bullets but this can be taken into account and the .243 can be chambered accordingly. The barrel life of a 6.5 is a little better than a 6 but neither are anything like a .308. But, I also believe the popularity of the .243 Winchester cannot be rivaled, and that the slight advantage that the 6mm Remington may offer isn’t enough to unseat the .243 in any way. ... Ohio in 2007 and discussed the popularity of 6mm wildcat cartridges. For that, they still have plenty of bullet energy. From the muzzle out to the 200-yard mark, we see a lot of the .243 and 6mm Creedmoor rounds interspersed in the graph, but once they hit the 200-yard mark and beyond, we definitely see the 6mm Creedmoor rounds group together at a higher velocity than the other similar weighted .243 rounds. There is match grade .243 ammo out there that will pick up the BC closer to these 6mm Creedmoor levels, and it’s a completely different ball game when we start handloading. For short range distances, but of these cartridges have near identical trajectories. We also kept the powder charge the same for each round of the same cartridge type. From 500 to 700 yards, we do start to see the 6mm Creedmoor rounds separate themselves from the rest of the pack regarding flatness. How this translates to bullets and stopping power is the more momentum a bullet has, the more it is going to take to stop the bullet. It does shine when it comes to the trajectory. Where calculations are made, we will be sure to make clear our variables. The ballistic coefficient of a round is simply letting you know how well the bullet resists drag and wind drift and thus, the easier it will be to group shots at long range. If we take a look at the numbers for these rounds, we see that there is not a trend for one cartridge having higher recoil than the other. Precision, wrote the piece on his necked down 6.5 Creedmoor, and moved on. I think I want to buy another 243 Remington 700 this spring. While it isn’t standardized by SAAMI as of this writing (January 2017), my understanding is it will be soon. I could give her my wife's 6MM which I feel the recoil is similar to a 243 or buy her a 6.5 Creedmoor. Sniper Country is reader-supported. From what info I was able to find on the net, it was designed a few years ago by the GAP ( Georgia Precision) folks specifically to shoot long heavy .22 cal bullets at decent hunting velocity while providing a good barrel life and flawless feeding from detachable mags. For the long-range trajectory, the 6mm Creedmoor shines. Just wondering what kind of barrel life I could get from these. What we are going to look at is the actual energy that is generated from firing these rounds. Muzzle velocity, when the bullet is paired with the right barrel twist, stabilizes a bullets flight path. The ballistic coefficient (BC) is either a term you pay a lot of attention to or it’s something you have never given a moment’s thought. The downside to the lightweight rounds is going to be the low BC which is useful when firing at these long ranges where wind really becomes a factor. As far as comparing the two cartridges go, computer generated data has its advantages in that these small differences are negated. Let’s take a look at the averages when we incorporate some more .243 factory rounds that are available. Each rifle tends to have its own small differences in its profile, and this means some small differences in the ballistic output. Since we are discussing two rounds that are popular for target shooting and one of them being hailed by some as the next great match cartridge, we should probably look into how they compare in their BC’s. We gathered the data in the same manner as the short range trajectory, except with the zero range set at 200 yards and graphed the bullet loss (inches) out to the 700-yard mark (Graph 6). Hornady 6mm ARC will yield 2,750 fps with a higher rate than heavier. Bullets we used in our comparison shot just as likely to burn one barrel as?. So components are harder to come by varmint rounds of the bullet velocity and over. 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