as far as 3.11 bullets in a.308 barrel. There are calibure conversions that adapt 308 and 30-06 bolt actions to shot 7.62x39. check out www.mcace.com. I dont know how well they work but I did see a post on another forum several months ago about some one using one and they seemed happy. also would possably make it so you would not even have to ream a 308 barrel to use in a AK. I was thinking of 22" barreled rommy this way. but was concerned about the barrel dia. differance also. worst case you could reload with .308 bullets.