.223 s.m.k 52 gn data

[DedIdick]

Heads are the toilets in ships, bullets are the thingies that come fleeing out of the barrels of rifles.
Bullet, case, powder, primer. Case head is the bit that holds the primer and faces against the bolt. The case head usually has the headstamp imprinted in it.

Which, oddly enough, is nowhere near the case shoulder.

Or the neck...it's a topsy turvy world isn't it; this black art (I am allowed to say that am I?) of reloading!