Thanks Nomercy. One more question now that I know I will have no issues with it in my Axis. But how about my AR? Will the slightly higher pressure effect my cycling much like using a hotter load? It seems that the designers used a differently shaped bullet for the reason you mentioned earlier to reduce the bearing surface. The Speer Hot Cors I am using are very similar to the ones in the factory ammo. I would imagine that using a standard .357 pistol bullet would alter the cycle pressure too causing the buffer/spring to take more of a pounding than necessary.