Yes, terrible lack of info.sorry. 1st round of firing was with 2 3/4 #7.5 1 1/8 @1145fps. Read in wonderful manual no loads under 1200. Just got back from testing 8 diff shells all over 1200fps. I believe that was my fail to eject problem. now the problem seems to be fail to feed. I did have one shell, rem 7.5, 11/4 high brass long range that functioned 3 mags15 shells. didn't realize this gun would be quite so picky. the feeding trouble seems to be not fully picking up next shell, but scraping it forward out of little grove in mag.