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submitted 3 weeks ago by [email protected] to c/[email protected]
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[-] [email protected] 79 points 3 weeks ago

Don't forget the most important US measurements of them all: 5.56, 7.62, 9, etc.

[-] [email protected] 24 points 3 weeks ago
[-] [email protected] 30 points 3 weeks ago

.308 is 7.62, civilian measurement vs military (there's actually implications related to pressures, sidewall thicknesses, machining tolerances, but yeah same same)

[-] [email protected] 14 points 3 weeks ago

Yeah, it's generally safe to shoot 7.62 from a 308-chambered gun, but not the other way around.

[-] [email protected] 14 points 3 weeks ago

Same for 5.56 and .223.

[-] [email protected] 5 points 3 weeks ago
[-] [email protected] 10 points 3 weeks ago

.308 is caliber in inches thus not metric.

[-] [email protected] 6 points 3 weeks ago

why do they use decimal for imperial units?

[-] [email protected] 16 points 3 weeks ago

Because even people who worked in imperial recognized that dealing with stupid fractions is stupid.

[-] [email protected] 8 points 3 weeks ago

I have a 77/250 rifle at home because I’m a real American.

[-] [email protected] 3 points 3 weeks ago
[-] [email protected] 4 points 3 weeks ago

It means the round fired by the gun is .308 inches in diameter, or 7.62mm. Gun caliber is measured in inches for Imperial.

[-] [email protected] 4 points 3 weeks ago

Because they couldn't rationalize using fractions.

[-] [email protected] 2 points 3 weeks ago

Machining is often done in thousandths of an inch.

[-] [email protected] 1 points 3 weeks ago

so why don't they write 1/1000 in then?

[-] [email protected] 2 points 3 weeks ago

Because, unlike internet pendants, machinists have shit to do.

this post was submitted on 02 Jun 2024
790 points (96.4% liked)

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