Ok Donald Trump, it depends on if you want a piercing on your ear or somewhere else

get that .50 cal my man

If it’s a brain piercing, then the biggest one

get the .45 ACP

If ur going to kill yourself. use the biggest one. if it's an actual peircing that looks like a bullet, get the smallest one.

This

The bullet in the picture is a 30mm bullet from an A-10 Thunderbolt II

frfr