What kind of accuracy is needed to not be embarrassed in NRL22 style competition? I have a Ruger 10/22 carbine in a factory laminated stock with upgraded trigger (could be switched back to stock) that shoots .6-.75" groups at 50yds and 1.5-2" at 100yds with its favorite ammo (SK rifle match). Thinking of putting a Vortex Diamondback Tactical scope on it. Would this get me started? Otherwise thinking of going to a CZ 457 Varmint but would like to spend the money on a centerfire precision rifle.