Excellent. - Hornady American Gunner 9 mm Luger +P 124 Grain eXtreme Terminal Performance Centerfire Pistol Ammunition

These rounds feed perfectly through an FN 509 compact and tactical. The compact is a 3.7in barrel, and the tactical is a 4.5in, in case it helps anyone. They are accurate, reliable, and I haven't had a misfire yet. These rounds resist corrosion well. I live in Arkansas and work in -5°~30°F coolers and have to constantly be in and out of them, as well as the hot humid weather outside. The rounds in my concealed carry are the ones that start to corrode usually after about a month or so, but I've yet to see the ones I'm stockpiling go "bad". I also want to note I just have them sitting on the floor in my room, so I'm not doing anything special to preserve them. I only have a little over 400ish rounds through my guns so far, but for the price they are easy to keep a steady supply to train with. Optics Planet always has good prices on great products such as these rounds.