Chad rest of the world: We only use imperial system to measure pizza, height, body waist and dicks.
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If you're gonna start somewhere; it makes sense to start with the schools...
We also use it for engine displacement.
Basically all cars are all metric (for fasteners, etc.) these days. Even my '90s Ford is metric.
To be fair, we mostly just did that for the European bullets
I think the British measure calibres in imperial.
Metric was too confusing for bullets, so we use both, and but neither of them are actually the diameter of the bullet, most of the time.
.223" is the same diameter as 5.56mm (which is 5.7mm across), but if you use 5.56 in a 223, it might kill you.
223 in 556 is fine, might fail to cycle.
then why is it called 556 if its actually 5.7?
556 was the measure of the inner diameter of the rifling of a barrel of a gun that shot 556.
Metric is confusing. That's why for most shotguns, we measure the width by the number of lead spheres of that diameter that would equal one lb, eg a 12 gauge shotgun is the diameter of a 1/12lb sphere of lead.
Nobody knows how big 18.53 mm is, but everyone knows what a 12 gauge shell looks like.
Oh, and gun powder is measured in grains, maybe early smokeless pellets were about the same size as grains of wheat.
The problem is it's impossible to tell whether you're joking or being serious
Mostly.
Maybe the original was 5.56mm and some dumbass decide "nah, not enough b u l l e t, better make it 5.7mm."
OK, so there is a 5.7mm, that's the same diameter as 5.56/.223, but it's not compatible with either because of the french.
I look into it. 5.7 is shorter than a .223 and is a much smaller grain.
Nah, we just use it to define inches and pounds and the like.
I recently converted all my recipes to metric and now I dump everything in a bowl on a scale. Total game changer.
That is because weight is more accurate than volume.
Volume was previously used because the measuring tools were cheaper and easier to use than a scale.
I do, as a metric person, feel like doing things by volume is way more fun though. And I mean visual volume, no measurements. I'm radical like that.
Welcome to the modern times!
I usually use grams to measure things into equal portions, easy maths I can often do in my head.
Hold on, that’s not fair, we also use it to measure how much Coca Cola is in the bottle…hmm never mind that’s not helping… let me start over…we also use it for drugs! Wait, shit…
I love how soda comes in 12 oz cans and 2 liter bottles. Mix and match!