I tested 30 rounds of .45ACP, S&W DK 1911, 5.2gr W231, 230 Berrys bullet, WLP primer, 1.260" COL. I loaded 8 rounds in the mag, shot the bullets, reloaded (no rushing either) and repreated. I've noticed the firsts round was noticably slower than the rest... about 40 ft/s slower than the average. The speeds below is the actual data- asterick is first round of mag. What up with that? The variation seems pretty poor on this batch...
699*
765
763
802
714
760
734
740
689*
685
727
736
772
718
734
756
667*
751
758
751
793
719
749
764
703*
743
738
735
743
719
699*
765
763
802
714
760
734
740
689*
685
727
736
772
718
734
756
667*
751
758
751
793
719
749
764
703*
743
738
735
743
719