Weight is grains

Not for modern bullets

Caliber has always been width/diamater

Traditionally you knew the bullet size out of how many you could make from a british pound of lead.

OK

But times evolve

How long is a the measurement 

Thats not really revelant here

It is sorta

Depends, you just gotta know

Because if we're talking bullets

1/100”

Even old round balls are involved

30cal = .3in
30cal = 7.62mm

Just figure it out for you're firing

Ok

So what is .300 WinMag mean

50cal = .5in
50cal = 12.7mm

.300 cal = .3in

Mhm

Zeros after a number in decimal have no value

Just makes it nicer

300 WinMag is 300 Winchester magnum

I thought I made 300 Winchester magazine

300bk, 300WM, 30-06, 308, 7.62 all are the same .30cal = .3in

So a 30 caliber round

Question

Would ballistics be a fun class

Aye?

I enjoyed it

Fun no
Educational yes

Useful eh

How much will you be shooting?

If you could make any gun which gun would you make

Weird question

Sig 550

Ok

AK-102 or a classic Colt Single Action Army revolver, with an ebony grip, blued steel and lots of engraving.

What if you can make a bolt action pistol

Nah

Why would you do that?