saami specification centerfire pistol rifle primer & pocket Min & max dimension 1

20 milligrams of priming compound in small rifle & pistol primers vs 36
for large rifle, magnum & 209 2 part shotshell primers that are an external
battery cup supporting an anvil ip in a primer cup or cap originaly for Ball
spherical powder that was harder to ignite than flake / extruded powders

1800 Edward Charles Howard discovered corrosive fulminate primary explosives
1807 the Belhelvie, Aberdeenshire, Scotland Rev. Alexander John Forsyth scent bottle fulminate ignition system patent
1814 the Joseph Manton copper tube fulminate primer , worked
1820 The percussion cap was introduced
1822 the Joshua Shaw fulminate copper cup
1828 Casimir Lefaucheaux developed the first pinfire cartridge with a primer cap inside the shell & used till 1910
1866 Hiram Berdan, a U.S. military officer & engineer, developed a Primer cap pressed into & over an anvil formed in a pocket at the REAR of the case
1866 Colonel Edward Mounier Boxer of the Royal Arsenal, Woolwich, England, developed an intigrated anvil from the same cap
1873 a New York dentist Edward Maynard punched a small hole in the center of a brass disc & soldered it to a drawn brass cup & used a regular percussion cup on a nipple for ignition &
1874 he put Berdan-type primer over an integrated flash hole anvil & primer nipple hollow tube rivited into a heavy turned brass head that was soldered to the drawn brass cup
1875 ? many cartridge manufacturers began producing machine drawn one piece tube & head full brass shotshells designed to be reloaded indefinitely
1877 paper shotgun shells with primer pockets were introduced
1880 many switched to integrated anvil Boxer pimers for full brass shotshells as smokeless powder became available from French chemists
1900 a switch was made to small battery cup integrated anvil primer was fit in the older primer cavity & projected into the shell
1920 non-corrosive primer was in use & remain viable for decades.
1930 gas seal cup wads that hold..