This ammunition is manufactured by Blazer Ammunition for the Cabelas house brand Herters with a Total Nylon Jacket and is based on the Federal Nyclad technology. I have found this ammunition to have the following benefits: clean shooting, no copper fouling and no lead fouling. The negatives: the 9mm Luger 115gr TNJ had a defective rate of 10% based on 500 cartridges purchased. The defects ranged from excess nylon jacket material, missing nylon jacket on bullet or damaged aluminum case. I discovered the problem when my FNX-9 slide jammed and fail to fire with a live cartridge in the chamber with the pistol ready to fire. My friend and I tried to move the slide but we could not. I called a range officer over and after 5 minutes he handed me a cartridge with a damaged nylon jacket and chewed-up rim that jammed in the chamber causing the slide to not move (there were no firing pin marks on the cartridge). Based on this problem I have to carefully inspect all the cartridges which I find too time consuming. I also use the 40 S&W 165gr TNJ and found 13 defective cartridges out of 300 cartridges purchased but I have not had an issue. I do not have any experience with the 45 ACP 230gr TNJ ammunition. When I use the ammunition I always have a clean firearm that has a recently oiled bore (properly maintained firearm) and I do not fire more than 100 rounds per range session.