HP: hollow point
BTHP: boat tail hollow point
FMJ: full metal jacket
wadcutter: type of bullet that just barely protrudes above the shell casing
charging handle: how you chamber a round on an AR (just pull back, let go and have fun)
hand-loading: loading your own cartridges
The most important one yet: cartridge
A cartridge is the whole thing that gets loaded into your magazine and consists of: primer, casing, powder, and bullet. It’s not a BULLET. They’re two very different things. Don’t confuse one for the other.
primer: a small round thing that gets put into the center of your shell casing which then detonates the powder once struck by the firing pin which in turn propels the bullet. (only for centerfire)
Center-fire: a type of ammunition with the primer in the center
Rim-fire: a type of ammunition in which the rim of the casing is the primer (i.e. .22)
stove-pipe: a type of jam that occurs in semi-automatic firearms in which the spent casing is stuck halfway out of the ejector port and is caught by the slide
double feed: another type of jam that occurs in semi-automatic firearms in which two cartridges try to feed into the chamber at once
Squib: a round that causes the gun to blow apart; it’ll sound a bit different than a normal gunshot and in that case, don’t chamber another round and fire again because this will cause the gun to blow apart. Clear your firearm and disassemble it to find the issue.
hang-fire: a delayed fire, if you don’t hear the gun go off, wait a couple seconds while pointing it down range. And please, don’t look down the barrel. You could blow your head off.