I have a custom 6.5-06 AI built by Kirby on a Lawton action and stocked in a Manners Ultralight. The barrel is a Lilja 1-in-8 twist for the 140 gr. bullets. After a lot of experimenting with powders and various 140 gr. bullets, I found that my rifle shot the tightest groups with the 130 gr. bullets and H4831SC (approx. 3,150 fps). I use Hornady 25-06 brass, neck it up and then fireform it. Although I have run it out to 1000 yds, I try to stay within 700-800 yds for my shots a game. Dies are Redding.