im not sure if this topic has been covered yet, I tried running a search, but got either nothing or everything. If it has, and somebody can post the link, Ill let this thread die an early death.... On to the topic. Ive been reading/thinking about the culling process used by many benchrest shooters. supposedly the best way to make the smk's shoot with the custom bullets is selective culling, and grouping the like bullets. I have been shooting 220SMKs for a couple months now at 1350, and I have notticed a marked trend towards a 2 and 1 group, or 3 and 2 group, depending on 3 or 5 shots. I just finished sorting a box and a half of these bullets. here is what I found. lot#001830853 4 @.674 8 @.674 3 @.675 24 @.676 13 @.677 the other was a full box from lot#001831067 1 @.673 10 @.674 10 @.675 46 @.676 32 @.677 1 @.678 In the next few days im going to find some time to sort the larger samples within a given length for weight as well, then shoot these to see if I can shrink those groups on down. Any body out there sorting bullets by bearing surface or by any other method than weight?