i have a ruger 77/17 and i clean it out of guilt not necessity. have a bore guide and dewey rods for it and it's still a fight to clean. cleans up better and quicker with the patchworm. no yellow waxy build up. i haven't put more than 50 thru with out cleaning, but again, only clean because of guilt. as for hunting, with proper shot placement it's adequate for groundhogs, but don't expect the bangflop of a centerfire varmint cartridge. good luck, dh