:lol: well the group up top is .521. i allso tried some fed 70 gran nosler b tip they shot allright 1.325. and allso horndey 58 gran v max molly they were 1.452. ill going to try the o ring to see what happens but for the 80 grans it dont need nothing. but i dont think it would be that accurite without the info on this site. so thanks for the graet reading. and i must say thanks to quick for the scope recommendation.