Prvi Partizan 357 Magnum ammo features a 158 Grain Flat Point Jacket bullet and is a new production ammo. Flat Point Jacket (FPJ) bullets are actually FMJ bullets with a flat nose. These bullets are designed to improve the stopping power of the FMJ bullets. They are suitable primarily for revolver ammunition but are also used in pistol ammunition. With a muzzle velocity of 1607 feet per second and muzzle energy of 907 feet pounds this 357 Magnum ammo by Prvi Partizan is a great production of ammo for those who are looking for the purpose of personal protection. Since 1928, Prvi Partizan has been manufacturing custom ammunition in Serbia for those shooters seeking experience in competition, indoor ranges, and big game hunting. Prvi Partizan ammo manufactures a wide range of commercial and military calibers for hunters and target shooters. All Prvi Partizan ammo meets SAAMI standards and is managed by an internal quality system to make sure there is 100% customer satisfaction.