I have 2 CZ 527 one is an FS. Hogdon Lilgun is king in both. I shoot the Hornady 50gr sp in mine it shoots 45's as well. 12.6 is a good spot to start. I like small pistol primers but rem 6.5s are good.
Both rifles will shoot into an inch all day as long as you don't heat them up real bad.
Good luck and shoot straight
Bob
