this post was submitted on 01 Apr 2024
1422 points (98.7% liked)
memes
10472 readers
3345 users here now
Community rules
1. Be civil
No trolling, bigotry or other insulting / annoying behaviour
2. No politics
This is non-politics community. For political memes please go to [email protected]
3. No recent reposts
Check for reposts when posting a meme, you can only repost after 1 month
4. No bots
No bots without the express approval of the mods or the admins
5. No Spam/Ads
No advertisements or spam. This is an instance rule and the only way to live.
Sister communities
- [email protected] : Star Trek memes, chat and shitposts
- [email protected] : Lemmy Shitposts, anything and everything goes.
- [email protected] : Linux themed memes
- [email protected] : for those who love comic stories.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
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.
The problem is it's impossible to tell whether you're joking or being serious. Throwing molten metal off the tower sounds like the most ridiculous thing ever, but apparently is a real thing.
Ah no, it's just that from reading this, I imagined it being poured outside, not inside the tower.
Like, someone looking at Galileo doing his experiments dropping weights off Pisa tower, and saying:
— What if we put a bucket underneath? What a splash it'd make!
And another one going:
— Yeah! And why just weights, let's throw molten lead off! What safety concerns? Haven't heard any
That's actually fascinating. Thank you.
He's correct and showing the...quirks of the system.
say it ain't so!
Grains as a measure of weight comes from the Troy weight system, think Troy ounce of gold. It is a very old system that for a long time was mostly used by apothecaries and probably has its origins in Ancient Rome.
Grains Apothecary is used to measure powder charge weight is because it was a "fine" enough scale for measuring small amounts of things that if you get it even a tiny bit wrong, can kill you. So, ammunition manufacturer's looked around and scales used for accurately measuring small amounts of drugs were commonly available, so they went with that.
Cool side point: Powder charges are checked by weight and dosed out, (or thrown), by volume as it has always been done since the first gonnes were a thing.