I have loaded a few hundred of these with both 5.2 and 5.5 gr BE COL of 1.250. Crimp .470 Just came from the range and had some problems feeding? The past batches were fine? This is why LSWC and 1911's annoy me. Here is picture of a simulated jam. It was close to this but the chambered empty was a bit further back They only thing I can think of is I may have seated the bullets a fraction deeper as I clean my dies, The ones in the pic are past dummy rounds when I was test in the barrel. I tried 3 different 1911's and different mags so it's not the gun What's weird is it is only a few out each box of 50. Just enough to be annoying. What do you think? Load them a bit longer?? Also with 5.5 gr BE it was tossing the brass over 10 feet with standard recoil springs, perhaps lower it back to 5 or 5.2gr?