It is a simple matter to drill into the side of a rifle chamber to inert a suspect live round that's jammed in. Just drill in through a stream of slow running water. We drilled one out through a blob of childs plastercine (a sort of play-do) in order that a Chemist friend of mine could centrifuge it, separate the steel drillings, brass case and propellant in order to analyse it for a student project.

Yep, the propellant was as volatile as the day it was made!