How come people say 5,000 km and not 5 Mm?
why not just say millions of meters or Mega meters?

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[–] 16 points 2 years ago (4 children)

Firearm's ammunition is a mixed bag because many military sizes are standardized with the rest of NATO. 5.56, 7.62, and 9 mm sure; but then you get a bunch measured in caliber .308, .45, .50.

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