Thread: Safest Method Of Discharging Unknown Primers?

Caliber 22 Hornet - Small rifle Primer
Whilst sorting my brass (aquired through TradeMe and the Forum) I have uncovered about 50 or 60 live rounds of unknown DNA, so I've pulled the projectiles.
Variations include:
- Cartridge overall length - seating depth
- Case length, both too long and too short!
- Three different types of powder (that's going in the garden!)
- Eight different type of projectile (which I'll sort to match other stock on hand)
- Three different types of primer, including pistol primers, so I was told by one seller

I intend getting rid of the primers, but I understand it is unsafe to press them out, like you do with a fired primer.

My question is what is the safest way to discharge the primer, before going on to de-priming and FL re-sizing?

Options I'm think are:
- Chamber the primed, but empty case, then pull the trigger. My concerns are, will doing this 50 - 60 time pit or damage the breech or barrel rifling?
- or, put a piece of hardwood in the vice, drill a tight hole through, drop the primed case in the hole and whack the primer with a sharp pin or nail punch (wearing eye protection, groves and ear muffs)

What's the best method?