I've used The Remington's, Hornady's and Sierra 125 pro hunters. The Rem & hornady both seemed pretty explosive on varmints and the Sierra pro-hunter held together and would penetrate right through a couple of small bucks. Never tried the privy's. The hornady & remington's are supposed to be .310 which is the proper size for the CZ's but the sierra's worked better and I could get 2600fps easily.
Neil