My low budget RPR .223 trainer has steadily consumed far more then my initial investment intent: PRS, Timney, AO stuff, Atlas, etc. I just really enjoy shooting it and considering my local range is limited to 200y it just makes sense. Now I am focused on better reading wind which blows 20-30 mph here constantly and my fundementals. This brings me to the question of upgrading the factory barrel for a Proof Research CF tube. I have been pretty satisfied with the factory barrel. It shoots sub MOA easily when I do my part, usually .6 - .7" 5 shots at 100y but also seems to occassionally and unexplicably throw a shot when I didnt feel I blew it. I am wondering if the investment in the Proof CF barrel would improve consistency and skinny the groups down even further, and if so, how much? The barrel would end up costing as much as I paid for the rifle new (~$750) so its a serious question on if the juice is worth the squeeze or am I asking too much considering at the end of the day its an off the shelf Ruger production rifle. I see a lot of guys upgrading the 6.5 RPR with Proof barrels but dont ever recall hearing anyone doing it with a .223. Thoughts?