Hey, that's a win. I'll take it.
this post was submitted on 06 Jun 2025
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Well you know, first things first.
9mm Parabellum was designed by Austrian George Luger 10mm Auto was designed by FFV Norma AB of Sweden 5.56 NATO was developed in Belgium by FN Herstal, as was 5.7mm 7.62×39mm was developed by the Soviets
These European cartridges all use metric measurements
.223 Remington, .308 Winchester, .30-06 Springfield, .40 Smith & Wesson, .22lr, .357 Smith & Wesson Magnum, .44 Remington Magnum are all American made cartridges that use decimals of Imperial measurements Original designer’s name gets includes because, well, capitalism lol
I think one of the few exceptions might be 6.5mm Creedmoor, developed by Hornady
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It's like that because everyone else measures them that way, and capitalism. It's not even because it's a better system, it's because money.
And by "Americans" you mean the companies that manufacture the firearms, right? Or whatever body, if any, that controls what size ammunition cartridges are measured by?
Both are used. If you see caliber after the number it's in 100 of an inch. If you see mm it's metric. (Though caliber refers to barrel diameter and can be expressed in imperial or metric). So a 45 caliber is 0.45 inches or about 11.5mm.
NATO has standardised on a few round types so they can share supplies between countries. The NATO 7.62×51mm round is very similar to the .308 and they can usually be interchanged.
They so stupid, they unconsciously use it everyday for example to calculate medicines' dosages or measuring time (miliseconds), it only shows how backwards and limited their measurement system really is.
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