FYI
two, three, or four flash holes means Berdan primers
can be removed by filling the case with water or mineral oil and syringe plunger that is slightly larger than the neck.
Berdan primers are available from RWS (if you can find a dealer)
I never had many and none now. But that’s pretty interesting. Thanks.
Some Monday morning trivia (IIRC):
Boxer primers (the easily reloaded) were invented by the British Army Colonel Boxer.
Berdan primers (the not-so-easily reloaded) were invented by US Army Colonel Hiram Berdan.
During the Civil War, Berdan raised a group of sharpshooters, who became snipers. But that’s another story.