Re: Data for .22-250AI??
I received my best velocity and accuracy with H-414 and the 75 A-Max. I am getting 3350, but mine is the standard 22-250. So you should be able to push 3500 with that AI. That is pretty fast. I talked to a couple of guys who had the AI and they said at 3500 fps they are pretty tough on barrels. But what the heck, let the big dog eat. H-414 is also their go to powder.
My rifle wears a Krieger 28", 1in8 twist.
Get some of the new lapua brass and you might even get a little more out of her. I have 300 pieces on order. Tom.