For me right now it's a CZ631 with a Beeman/Williams peep. Mainly because I'm stuck shooting in my basement! Bah! It's really cold here right now, daytime highs of around -20c plus a wicked windchill. Aside from weather though, I really like my CZ rifles. They're just so accurate and fun to shoot, not to mention easy to cock, quiet, and fun to tinker with.
How 'bout you?
Mulby