I took my new Glock 35Gen4 to the range today. I vowed to never buy a .40 again; that didn't last long. The Underwood 135 Grain .40 ran like a champ. The 50 round box ran flawlessly. The primers looked good and the brass looked normal. The round was hot for sure, I wish I had a chrono. I also ran some Lawmen 165 grain FMJ and Blazer 180 grain. The glock 35 ate them all but I gotta say the Underwood stuff was FUN!!!