Shared from Zite Ever since the introduction of the centerfire rifle cartridge in 1866, military rifle ammunition has looked essentially the same. A copper-alloy or steel case enclosing the loose propellant is mated to one of a huge variety of bullet styles, with a Boxer or Berdan primer at the base. However, despite this external similarity, the ammunition available by the early 1930s was very, very different than that of the 1870s, or even 1900s. Transformative changes were made to each component of the military rifle round during this period, until the ammunition finally became suitable for use in selfloading weapons: - See more at: http://www.thefirearmblog.com/blog/2015/01/16/eight-reasons-selfloading-rifles-had-to-wait-for-john-garand/#sthash.rm7fd5Bv.dpuf John Hames shared with you: ...