What does the last two number plus MM in Ammos mean
Posted by TapResponsible1343@reddit | Firearms | View on Reddit | 9 comments
As an example the 45 in 5.56x45mm or the 39 in 7.62x39mm
OleRockTheGoodAg@reddit
Cartridge length
TapResponsible1343@reddit (OP)
Thanks
OleRockTheGoodAg@reddit
Some cartridges have a 2nd number that refers to the amount of powder grains used too that could be easy to confuse, 45-70 govt and .30-30 Winchester
AmnFucker@reddit
You forgot 30-06, where the 2nd number means the year it was adopted, 1906.
OleRockTheGoodAg@reddit
Great shout!
1Crusty_Old_Man@reddit
But those aren't .45-70mm or .30-30mm.
Franticalmond2@reddit
Millimeter….
WillBrink@reddit
Bullet diameter + cartridge case length.
GalmGZ@reddit
La lunghezza del bossolo