I agree with Jeff, if I am moving, I'm loading unless I have more than enough loaded for the stage. The rules say you can load more after the buzzer as long as they are not in your hand at the start. This past weekend at the tar heel match we had a long run from one stage to the adjacent stage where the shotgun was staged. After dropping the rifle in the barrel, I sprinted to the adjacent cof while grabbing another shell off my caddy. Loaded it while picking up the rifle. Don't know that it helped but it seemed to be a good idea as there were LOTS of targets.