I have been waiting for good weather conditions for a few days to do some 600 yard testing. 65 degrees, solid overcast, no wind and very light occassional rain. First five shot group, 5 ". Second round, 3.375, 4 in 2" and 3 in .875. Last group, 5 in 2.292". I know it can be better, but it was my personal best, and it was a hoot. Savage 12 FTR, Rock Creek barrel, 6 Dasher, 33 grs RL15, 450, 105 Amax, 2.815 with a nut, and Weaver T36. Thanks, Luckus