Seriously, look into BP guns, preferably ones that do not require primers and archery...and a sling shot. Even under fairly Draconian and corrupt governments, BP sport shooting and hunting remains. It is usually even legal. Nigeria is a case in a point.

If you hoard percussion caps, then you have available relatively advanced breach loading rifle designs that use paper or rubber cartridges as well as multi shot revolvers. The pure lead round ball out of an 1860 Army, let alone out of a Walker or Dragoon, will do some damage. A .577 Minie ball meanwhile makes a truly horrible wound.

If military caliber small arms rounds are heavily taxed, made illegal or simply unavailable due to hoarding, odds are that you can still be sending arrows and lead down range for recreation and hunting with more primitive arms.

In most states BP arms, bows, and slingshots ship to your door, no FFL needed, and no paperwork.