All the "one gun" threads on all the survival forums got me thinking. I'm a worst case scenario guy, which for me means end of the industrial age - no new ammo, no new guns, no parts, no powder, no primers, etc. Each and every round spent may never be replaced. It may be decades before civilization is organized enough to return to industrial levels. So flinters are starting to look interesting; casting balls is easy. The trick for the long term would be powder, so I have a question.
Say I came across a cache of 5.56, next to a decaying body with a bent and rusty AR still firm in its bony digits. Theoretically, could I pull the bullets out of the case and use the powder in my smooth bore flinter? How about the primers; could I safely remove the primers and reuse them in a crude conversion on a cap and ball, like the 209 converters advertised here? Remember, I'm talking we're down to no other options at this point, and we're not shooting at Camp Perry.