Anybody have any thoughts on .22 semi autos? With the cost of centerfire ammo up around 50 cents a round, it seems a guy could get a lot more practice for a buck with a .22. I'm looking around and am liking the looks of the Ruger Mk III and he Browning Buckmark. I was considering a Walther P22, but am hearing some negative reviews of those. I'm not looking for anything I can qualify for the Olympics with, but am contemplating something that'll reward you with a decent group if you get all the fundamentals right.