If you take two pistols of same make and model why does one shoot anything you feed it and the other will only digest certain rounds? Curious about the specific variables that create these idiosyncracies. I had a .380 Sig 230 that would eat anything except 95 grain Hydra-Shok. Recently I was trying out a couple of different .40 loads in my Beretta 96 and had a couple of FTF with Gold Dot 155 grain. I have never had a problem with any other round and have settled on the 165 grain Remington Golden Saber but it does bother me that the Gold Dots had issues.