The Remington UMC 45 ammo features a 230 grain non magnetic full metal jacket bullet that is lead core and copper jacket. UMC 45 auto ammo is boxer primed and non corrosive, it also features a brand new never fired virgin brass casings that can be reloaded for those high volume shooters that love to reload their 45 auto ammunition. The Union Metallic Cartridge Company name has been synonymous with some of the finest ammunition made in the United States. Since its beginning in 1867, UMC has blazed a trail of innovation in cartridge-making excellence that continues to this day. UMC was the first ammunition company to produce centerfire ammunition, the .22 Long Rifle cartridge, and super-accurate “Palma Match” target ammunition. All these milestones mean one thing: Experience – experience that translates into outstanding performance at a very attractive price.At our UMC division, we make only first-quality product, in a limited line of popular specifications, so we can bring you the benefit of manufacturing efficiencies that keep costs low. The UMC division makes only first-quality product, in a limited line of popular specifications, so they can bring you the benefit of manufacturing efficiencies that keep costs low. The rifle and handgun ammunition made today is the product of 140 years of design innovation and manufacturing excellence. Whether for practice, target shooting or training exercises, UMC ammunition is a superb choice for high volume shooting and hunting.