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.
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