Has anyone tried autocomp yet, I did a search and came up with nothing. I loaded some 180 xtps with longshot and some 135 noslers with autocomp. The longshot worked great. At a starting load of 8.5 I was getting 1160 fps and a max of 9.5 was around 1250. All of this is out of my stock G29, new starline brass and federal LPP Autocomp with a starting load of 8.7 was just under 1200 with a max of 9.5 it was 1320. My max velocity is under the listed starting velocity of 1372, even if you subtract for my short barrel this is still way off. I should mention the pressure ring on both of these listed max loads is .4335-.434 where a double tap comes out at .435 Does autocomp need a magnum primer? I got my load data from hodgdons' web site. I don't see primer type or barrel length mentioned. I'll see if they will answer an email but would like to hear anyones experience.