this post was submitted on 06 Jun 2025
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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.
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Yeah, it's not intuitive that bigger gauge numbers = narrower diameter unless you've specifically worked with wire or shotguns before.