So I bought a 6.5 cm and killed a few deer- it worked fine, and lots more fun to shoot than the 300. Then I bought a tikka t3x in 22-250, 8" twist. Loaded up some 80gr eldx, and took it deer hunting last year. First deer I shot with it was a young 8 point, about 70 yards. Missed the first shot, causing him to turn 180 degrees, but not run. Never lost him in the scope, racked the bolt and hit him, hard quartering away, right about at the last rib. He ran maybe 100 yards, pouring blood (easy tracking), and died in a field. Bullet under offside shoulder, heart and lungs soup. I was amazed at the damage. . . Just like if you said I would be.