I have been shooting handloads through my Glock 41 Lone Wolf conversion. They are 12 grains of Longshot, 230gr Hornady XTP and fresh Starline brass. For the first few times I took it shooting, it worked perfectly (150 rounds). The last couple times I have had some failure to feeds. This can happen from limpwristing it, but I have had it happen with a firm hold. The two modes of failure are the next cartridge is nose down in the mag, holding the slide open. The other mode is not locking fully into battery. Clean, lubed gun. I'm wondering if I need to shorten the COL (I err on the high end because it is such a high pressure load 1.265 to 1.270), do a tighter crimp, or a stiffer mag spring. Thoughts? P.S. The one change was I added a Streamlight TLR-2s to the rail and it was on both times I had problems. I try without it next time.