I like the AI for what it is...simple and easy. My early CZ Varminter is saddled with a 12 twist tube as well. Luckily it will shoot 50s. It will eventually get a more useful barrel on it....but after discovering the 22 Creedmoor, I dont know that it will even remain a .22 bore. I have to determine if I have a use for a slower .22.

I dont have a single use for a 40gr bullet at any speed, so that part is wholly irrelevant for me, and many others. When I can push an 70gr bullet at the same or better speeds than a 223AI pushes 50s, its a win every time.