I haven't really taken my hmr to its max, but I've shot targets accurately at 300 yards. I killed a rabbit at 150 and one at 200 yards today. I've shot my .22 at 250 (hit a clay pigeon, it took a few shots, about 10, but I did it) and at 300 yards too. I have it sighted in way higher than I should, but it still shoots well enough to hit a milk jug 4-5 times out of ten, and it's just a stock 10/22 off a bipod. Taking that into account, I should be able to go farther with my hmr, if the wind isn't blowing. T-bolt HMR sounds sweet though, I've heard real good things about the .22 ones, and my uncle has one that I really like.