My FNX40 worked great today with 180gr and 165gr accuracy was great. It was very hot last weekend and I was at the range about 4hrs, I kept the pistol in the shade but I guess it picked up the heat and threw off accuracy. My cell wouldn't even work said it was hot beyond working limits, Thats HOT. I remember when I was having problems with accuracy I showed off my prize and was explaining the DA/SA and the D/A didn't function properly, but when I got home and the gun cooled off it functioned properly. I've read old threads about heat and FN's but I guess some might still have probs. Thanks for everyones help.