I would recommend you start about 0.010" off the lands, load up 50 rounds. Then shoot a group where as long as the group is smaller than max acceptable, you keep shooting. When the group blows up, shorten to 0.020" and repeat. I got 3 at 0.01 and 0.02 before the group blew up. I got 10 in at 0.030" right at 0.929 inch, Also 10 at 0.040", but the group was bigger…..like 1".
Basically, I stack rounds until I blow the group, then I move to the next tune. Most rounds wins.
