Re: 6.5-06 ai
IIRC, Kirby Allen was a fan of that cartridge; you might talk to him about a build. I have a friend that has one. He used 25-06 brass, and just seated a Nosler ballistic tip to fire form. The boat tail of the bullet was sufficient to expand the case.
The round is pretty cool. It is everything the 25-06 wishes it was and more. Bullet selection for long range guys is absolutely an improvement over the 25-06. Rebarreling my 25-06 to 6.5-06 AI is on my short list of rifle projects.
"It is not the critic who counts, not the man who points out how the strong man stumbled, or where the doer of deeds could have done better. The credit belongs to the man who is actually in the arena, who's face is marred by dust and sweat and blood, who, at the worst, if he fails, at least fails while daring greatly, so his place shall never be with those cold and timid souls who know neither victory nor defeat."