While reloading some cartridges, I was on the last step of crimping the bullet into the brass case, and made and mistake and the brass was compressed wrong.
The other reason for removing a bullet is if one missed a step and didn't put the powder in first. If a cartridge without powder is put into a gun and fired the primer will give it just enough power to lodge the bullet into the barrel causing a dangerous blockage.
Whether or not it is possible to reuse the components, how would I remove the bullet from the cartridge?