While the .243 Winchester is probably the greatest of the great 6mms, the 6mm Creedmoor, which blossomed in 2017, is giving the .243 Win. 6mm Creedmoor vs 243 Both use the same 6mm/.243” diameter bullets, but the 6mm Creedmoor was specifically designed to use longer, heavier, and more aerodynamic projectiles. a run for its money due to its superb accuracy. I do strongly prefer the 6mm Creed for it’s faster twist for heavier bullets, and I used a fast twist 243win AI for years ahead of a straight 243, but the results are all there. More is … The improved shoulder of the .243 AI will prevent more of the corrosive gasses/heat from the throat and prolong barrel life. The longer neck of the 6mm … The 6mm BR is known to be one of the most accurate cartridges produced, especially at mid range distances to 600 yards. The 6mm Rem uses the mot powder and will eat barrels the fastest. https://www.rifleshootermag.com/editorial/243-win-vs-6mm-creedmoor/83694 There are more Creedmoor target rifles out there in factory configuration than .243. Alaskan Coalition Seeking Permanent Protections For Bristol Bay . It is a nearly dead cartridge though so components are harder to come by. 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. Conservationist. The Rem has a slightly higher velocity typically. It is a toss up between the 6 Creedmoor and the 6x47. Ackley finally gave in to his customers' requests to develop the .243 AI. This caliber has a very wide accuracy node and this one settled in at 3458 fps with 80 Grain Berger VLDâ s. BUT, if you're wanting to sling the 75+ grainers for a 22 caliber bore, IMO, the 22-243 Improved or 22-6mm or 22-284 is a little better choice because they have more horsepower to drive them. By David E. Petzal. By now plenty of you are ready to slap me upside the head and extoll the superior virtues of your 243 Winchester, 6mm Remington, 6mm Creedmoor, 25-06 Remington, 257 Wby., 17 Remington or even your big 300 Win. Commonly encountered match cartridges, left to right: 6mm BR, 243 Winchester, 6×47 Lapua, 6 Creedmoor, 6.5×47 Lapua, 6.5 Creedmoor, 260 Remington, and 308 Winchester. I like 243 because it's really common and if need be there is lots of factory ammo if I ever needed it. So do lots of others like the 223 Rem. For those who suspect foul play on the round count of my barrels and the 243, all I can say is thank you Bartlien. Latest. The .243s arent twisted right and are usually 9.25 and slower as they are set up for lighter bullets except for the Ruger Precision Rifle which was 7.7 but that was replaced with a 6mm Creedmoor. 6.5 Grendel, 6 creed, 243win, 6SLR, 6BR/Dasher, 243LBC... that’s really the sweet spot for deer. The .243 AI is overbore and will eat barrels. 243 Win vs 6mm Creedmoor vs 6mm Rem Any thoughts on these as long range target cartridges? I am leaning 6 Creedmoor and plan on running the 105's at about 3,150fps with 42gr of H4350. The 6mm and the .243. Second, it was chambered in the delightful Winchester Model 70 Featherweight, which was a major factor in the .243’s huge success. April 21, 2015. Yes, those all work and work well on coyotes. More The Gun Nuts. The .243 when twisted right is a very capable long range round. Parker Ackley reluctantly developed the .243 Ackley Improved ("AI"). … Curious what you go with, why and your results. Mag.