I can add a little data for those interested, I just worked up a load for my colt compitition 2 weeks ago using tight group and 124s and chronographed as I went. I was using BDX fmjs seated to 1.130 which in my experience have performed nearly identical to Campros.3.6grn=975fps, best grouping but s.o.l. For power factor,3.8grn=1021fps,still good group but on the razors edge for pf,4.0grn=1076fps about a 4inch group at 15 yards also my current load for my shadow.4.2grn=1098fps with the most inconsistent group. Previous to this I worked up a load with my shadow without a chrony and found the accuracy improved with velocity with the best being 4.3grns with both campros and BDX, when finally did chrono it was screaming out at 1132fps so I backed it off to 4.0grns. I would have thought the longer barrel in the 1911 would have the higher velocity.



















































