I've got a Ruger MkIII Target with a Leupold 2x scope on it for tree rats and bunnies. I put the VQ kit in it to improve the trigger and put the Mk II bushing in it to make the magazine drop and trigger pull better. Oddly enough, the stupid thing prefers Remington Thunderbolt ammo over anything else I've tried, including a variety of match and SV ammo.