Quote Originally Posted by Robinhood View Post
I am betting that the 6.5 SLR/S improved will hit 2950 plus with a 142 smk with under 44 grains of powder. Longer neck, COAL 3.845 typical pita to make brass. That closing in on the 6.5-284 with more barrel life. Basically a Mystic with a longer neck. I think I may have to be the crash dummy.
I have had my .260AI a little over 3000fps but it just didn't shoot well enough for me pushed that hard. I have built quite a few .260AIs here in the last couple years for my self and a few friends of mine and everyone of them shoots the best right around the 2950 mark. There is a nice thread over on coueswhitetail.com that a guy built a 6.5SLR and he documented very well step by step all the way through load development.