Remington's Golden Saber HPJ: Designed for law enforcement and personal defense, the Golden Saber High Performance Jacket combines match-type accuracy, deep penetration, maximum expansion, and near 100-percent weight retention. At the heart of Golden Saber High Performance Jacket (HPJ) handgun ammunition is a high-performance hollow point bullet with a jacket made entirely of cartridge brass, not copper gilding metal, so it releases energy over longer distance while mushrooming. Designed to meet U.S. federal law enforcement standards, Golden Saber HPJ is available in .380, 9mm, .38 Special, .357 Magnum, .40 S&W, and .45 ACP.