Anal, I guess. I like knowing who to blame. If I take the gun out of the equation then all the blame for a poor or missed shot points at me. Also the reason I tote the autoloader is that occasionally under pressure ( while I have time and there is good slaughtering weather ) I fill the freezer in one whack. Probably never takin over 5 deer a season and 4 of those came in fading light on the last day with an empty freezer. Back to the main reason for the post. I thought that there might be a propriortary powder that works better in a autoloader.
If its a hunting rifle why worry about groups? If the first shot goes where the cross hairs are, why do you need to shoot 3 more at the deer?
On a deer gun if you can put all rounds fired into a pie plate at 100yards, offhand, you will put meat in the freezer.