I can see where a flintlock would work, and its cool that you can if need be, amke all what you need. But if I was going to plan on a suvival gun, I think I want something more reliable, compact, and weather proof. Most flintlocks are fairly large heavy guns, needing larger heavy bullets. I don't want to sacrafice something else in the way of supplies for feed a large bore rifle. Besides, if its a shtf type of senerio, I want something with fast second and third or more shots in case of two legged varmits cutting in n my survival chances.
As I see it, yes a flintlock will work if that all we have left to us by the powers that be. But even in Soviet Russia, the peasants were allowed to have bolt action .22 rifles or single shot break open shotguns. Since I don't forsee a time in my lifetime that the 2d amendment will be tossed, I'll go with a lightweight synthetic stocked .22 rifle and lots of ammo. I don't think anything surpases the wide range of roles a .22 will fill. Small game, and deer. I read in his biography, Audie Murphy kept his family fed when he was a kid, using a .22 rifle. One time he got a deer right in the head, dropped it right there, and a game warden came along. Audie told the warden his family was hungrey, so don't try to stop him. The warden let him slide. Audie was 12 or 13 at the time.
But, hey, if I'm wrong and the gov't takes the cartridge guns away from us, then I guess I'll be priming the pan with the rest of ya.
I'll still have my air rifles.