62x39 123 grain Bimetal FMJ or Bimetal spherical with the steel cased cartridge with non-corrosive Berdan Primer, but this 1 has the Military Spec lacquer coating that gives a waterproof seal on the case mouth along with the primer pocket.r4nd0m said: Shoots nicely - cleans up very well - haven't experienced any troubles in 500 rounds The sole cave