Never did buy a C02 discharger. (Amazing for me as I can be quite the new gizmo have to have).

I've always either shot out the load if loaded (most of the time)or I have unprimed and on ML's with removable breech plugs, just pull the plug and let the powder fall out then push the projectile out through the breech.

On ML's without removable breech plugs, and have loaded a projectile without powder (really does not shoot very well without a powder charge) I haul out the range rod and ball puller and get to work. Ugh!