Put you inside of the bullet, just to see a shell of yourself
He is inverting the normal idea of shooting someone by saying that he will put Kendrick and the other guys he’s going at “inside of the bullet,” instead of putting the bullet inside of them. This way, they will be able to “see” (since they’ll be “inside” the bullet), a “shell” of themselves. Budden makes sure he goes colder than Kendrick, as Kendrick only said he would murder them.
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