.223: Proper American rifle round.
5.56: Communist European rifle round.
this post was submitted on 06 Jun 2025
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5.56 puts out slightly higher pressures. I used to have a bolt action .223 rifle that wasn't rated for 5.56. I sold it to an old guy in the country who was going to use it to kill coyotes stalking his chickens and small livestock.
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cops: "9mm is too weak! we need something with 'stopping power!"
gun people: "ok here's 10mm"
cops: "too much recoil!"
gun people: "ok here's .40 s&w"
cops: "u no wat, we're just gonna stick with 9mm"
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Every US company I’ve (engineer) worked for has been a metric company
I (machinist) have only seen a few large US firms or companies send me a metric print. Different worlds, I guess.
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And the only time they use the proper date format is their national holiday.
If you mean dd-mm-yyyy instead of mm-dd-yyyy, I’d agree it’s superior. That said, other countries have us both with their fully ISO compliant yyyy-mm-dd standard.
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Hey, we also measure our large soda bottles that way!
And street drugs
and drugs
whats fucking weird to me is that we use millimeters and inches on the same fucking rulers.
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Took me a while to realize that Caliber is roughly inch/100. Once I did I no longer needed to memorize them.
I don’t understand. A 5.56mm round has a .223 bullet. .223 is the caliber and is in inches already, no math required. .223 / 100 =0.00223 which isn’t particularly useful.
Their math was flawed, but I'm not really sure how to explain the math part better. I get what they were going for, though.
It's closer to decimal divisions of an inch, so a .223 caliber bullet would be a hair shy of a quarter of an inch (.25) wide.
Edit: just realized you had the second part of that already
That still makes no sense. Is the commenter surprised to learn that a 0.223 inch caliber is approximately 0.223 inches? That a .45 inch caliber is about .45 inches? Yes, that's how units work.
But you don't call it "point four five caliber" you call it "forty five caliber". Similar is 7.62 mm AKA "thirty caliber". It's reasonable that someone wouldn't know that it's literally just hundredths of inches.
Shotgun gauge is wonky, so it's not a given that the number would just be a diameter in units they are familiar with. "Grains" are also a meaningless unit to most people.
What do you mean? its 7000 grains in a pound. 27ish grains to a dram, 16 drams to an ounce, and 16 ounces to a pound. Pretty straight forward.
Also dont confuse an ounce(oz) and a fluid ounce(fl oz). That's 8 fluid drams to a fl oz, 16 fl oz to a pint, 2 pints to a quart, and 4 quarts to a fucking gallon cause it makes sense. Obviously, 63 gallons to the hogshead.
Shotgun gauge is wonky, so it's not a given that the number would just be a diameter in units they are familiar with.
Yeah, it's not intuitive that bigger gauge numbers = narrower diameter unless you've specifically worked with wire or shotguns before.
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We all use metric. We need to just rip the bandaid off.
they would freak out if they have to measure temperature in kelvins, even celcius freaks americans out.
Also wetsuits…? 🤷♀️
Hey, that's a win. I'll take it.