A friend and I bought identical CZ-455 and they varied dramatically in what they liked.
How dramatically?
Travis
Mine liked the Winchester x22lrsuba shot nice nickel sized groups at 50, his shot the same load into triple that size.
Same experience with his liking the CCI small game bullet and shooting nickel groups and mine shooting 3" groups.
I've actually seen the largest variance among some of the various Eley types from great to pathetic. That's with 2 Coopers and 2 CZ's and a Browning lever. I have a 10/22 but as Hatari and I chatted this weekend, it's the same shape as I bought it in 1980 (for $89!) and I'm awful tempted to start playing plug and play with it.