Go to RJ's guns on the web. Actually, od a search for Ron's TC's. It'll come up. He has a description of all the different barrel typs. alot is just the lugs and barrel scripting etc. As far as TC's in 22lr--I have a 14" 22lr match with a Burris 7X IER and adjustable objective. If you've ever seen ro shot a NRA indoor 4-position smallbore rifle target at 50' you'll what I'm going to describe. At 50' from a slung-prone position with it, I shot a a 99 with 7-X count. I barely missed the 'clean' score because of ring-size. one was touching. I shoot the Eley Orange/Red box, or RWS match 22lr. For squirrles and such, I shoot the same ammo. Head shots are relatively easy. I vote go and get one. You're missing alot of fun! PS-most of better 22lr like CCi, Rem, and Federal all shoot well enough for hunting tree-rats, and head shots to 50yds.
