ORIGINAL: Ridge Runner

rechamber to the 25 gibbs and get another 100 to 150 fps over the AI, course you would then hafta reload, but you would for the AI.
I'm in the process of building a 6.5 Gibbs now, according to the smith and a couple of his customers, the 6.5 gibbs will run right along side of or ahead of the 264 wm (depending on barrel length), give better barrel life, with less powder.
RR