A decent hammer and brass tipped steel rod should work... ?
If not ~ I wouldn't use power tools to drill them out. If it were me I would make a little brass bushing/guide to hold a drill bit centered in the bore and drill them out by hand - lead is nice and soft.... should not be a problem.
If it were not me & 'not me' does not own a lathe to make a sleeve/bushing ... file a .22 cleaning jag into a "D" bit and use an aluminum cleaning rod to drill it out. brass will be harder than the bullets & by filing it you should work harden it just a little bit more.
Would take longer but you won't damage the bore, you won't blow yourself up trying to shoot them out and your hair won't fall out while you are waiting to die from mercury poisoning
GOOD LUCK!
If not ~ I wouldn't use power tools to drill them out. If it were me I would make a little brass bushing/guide to hold a drill bit centered in the bore and drill them out by hand - lead is nice and soft.... should not be a problem.
If it were not me & 'not me' does not own a lathe to make a sleeve/bushing ... file a .22 cleaning jag into a "D" bit and use an aluminum cleaning rod to drill it out. brass will be harder than the bullets & by filing it you should work harden it just a little bit more.
Would take longer but you won't damage the bore, you won't blow yourself up trying to shoot them out and your hair won't fall out while you are waiting to die from mercury poisoning
GOOD LUCK!