.40 S&W and 10mm auto are both 10mm rounds!

Here's the funny thing. A 9mm is closer to a cm. The rim is 9.96mm.

Can US people imagine their size in a whim?

The metric system, but with extra steps.

We also put inches on ours, yet not a single soul has ever used that side. I think it's only to constantly remind us we are superior ;)

Yeah Stormy said it was only a centimeter

The only thing on a real American ruler is red white and blue .

10mm ammo is a real thing, tho

Tbf 10mm Auto is a real caliber (that the FBI tried to use but "it hurted their wrists" so .40SW was invented.)

https://www.ammunitiondepot.com/3212-magtech-10mm-180-gr-fmj.html

How many grain?

You’re being way too optimistic

Again???

We occasionally get engineering diagrams from clients in the US and they're always going on about screws that are 2/3 of an inch long. It's not just that you're not using metric you're using a weird fraction and not a decimal.

It's super confusing when you get into high precision stuff because then they start going on about 128th of an inch. Just tell me how big you want it, stop telling me what fraction of a different measurement it is. Surely there is something below inch that you could use. I still wouldn't know what you were talking about, but at least it would look less stupid when you wrote it down.

Canadian engineer here. Although we use the metric system in principle, in reality we use feet and inches for everything. There are lots of benefits to using base 12 for measurements.

The number 12 has six factors, which are 1, 2, 3, 4, 6, and 12. It is the smallest number to have six factors, the largest number to have at least half of the numbers below it as divisors, and is only slightly larger than 10. (The numbers 18 and 20 also have six factors but are much larger.) Ten, in contrast, only has four factors, which are 1, 2, 5, and 10.

I get the Europeans hate it though because only the people who live near Chernobyl can count to 12 on their fingers.

Maybe people will forget about the epstein files if he tries changing to metric

People just don't really care enough to. And we already use the metric system in science, engineering, medicine, aerospace, military, and any science class in high school or higher. So what if our road signs and cookbooks are in imperial units.