was talking to a guy that built a 25-06AI, with a 26" tube ...claims he easily gets 150 to 200 fps more than his standard 25-06 loads...his claim is 3200fps with the 120's and 3250 with the 115 gr BT..without any pressure signs whatsoever, and excellent accuracy..now i can get an honest 3150 fps with the 115 nosler partition with a hot load of RL 22..with my standard 25-06 in a 24" tube..but it's pretty warm...he claims he could get a little higher with his AI than what he does...is his extra gain in velocity...due mostly to an extra 2" of barrel length...or the extra case capacity of the improved round..?...i'm thinking that if i get 3150 with a standard 25-06 in a 24" tube..i might get 3200 in a 26" tube...meaning only a 50fps increase for the AI round..