What is the assembly of bullet, case, powder and primer called?
The proper term, so far as I know, for the completed unit you place into the magazine or chamber.
As in, hand me the ammo, or do you have enough ammo, or reloading some ammo ... meaning, the whole, finished thing.
As in, range rounds, or 100rds/box, or ten-round restricted magazine.
Whereas, the individual parts are generically called "components
," or named by their specific component part name (ie, primer, case, powder, bullet).
Look at any place (ie, CheaperThanDirt.com) where both cartridges/ammo as well as reloading components are sold. Notice that there are two distinct terms used for the categories:
- "ammo" (for fully-assembled, ready-to-use, factory rounds); and
- "components" (for the pieces required for assembly of a complete cartridge).
I see people calling them caliber such as, "What caliber do you shoot?"
Whenever I hear someone ask that, I understand them to be asking how big of a punch does my ammo deliver, or what size are my rounds in terms of caliber. I do NOT think they're using "caliber" interchangeably with the terms cartridge, ammo or rounds.
I always thought caliber was the bullet diameter and cartridge was the whole thing.
Is it a regional thing to call the cartridge caliber? Are they now synonymous?
No, not that I know of. Can't think of anyplace where "caliber" means the whole thing, since it would mean something different for this one versus that one, depending upon the intended chambering. Can't do that and still communicate clearly ... so, no, it can't be that.