The point of the exercise is 2 fold
1. Render the round inert safely (without the use of a firearm)
2. Preserve both the case and bullet in as "Intact" state as possible.
1 is important as on many collectors tickets the proviso os you can hold live (but then it needs locking up...not my idea of fun) but it is not to be fired.
I can hold anything between 2mm - 19.2mm live, AP ball and expanding....but I cannot fire it (OK, I may take the odd round from anything I have been given to fire for my collection, but that is swiftly castrated an dnot going to fire again).
One idea I had for rimfire rounds (modern ones in any event) was a tiny cold drilled hole with a suitable solvent put in with a hypodermic and the resulting poridge washed out.
Any safe ideas?
I oiled an old primer some time back and it was like the quatermass experiment
