I just put a scope on mine that can actually work at night now, for predator hunting. I zero'd at 50 yards, and found that to be about 5 clicks high then at 100 yards. Should be real close to zero at 200, and very acceptable still on small ground-hog sized targets this summer out to 300. That pretty well covers it for me. If I get to any farms where I can actually air it out to 500 or 600 yards, I will just dial up on those. This is using 55gr bullets.