I hunted with a Rock River Varminter last year. I shot 93 ground hog's with mine. The AR is as fantastic platform for shooting ground hog's. No recoil, you can watch your shot, and a fast double tap is just a hoot. I shoot the Black Hills Red Box 50 grain V-Max ammo. The accuracy is incredible. I have been reloading for 35 years and I do not think I can reload a shell to shoot any better than the Black Hills. Tom.