This thread was originally about bushcraft and firearms which I believe goes hand in hand.
Shotguns are the ultimate bushcraft firearm. When the English colonists first landed here they had European fowler type weapons and blunderbuss style shotguns.
When the mountain men headed out into the West, they had a muzzleloading rifle in a scabbard, but more often than not what rode across their saddle horn was a double barrel shotgun.
Early in the frontier, the Indian trade muskets had bores similar to a 20ga to 12ga shotgun, and the Indians upgraded to them as fast as possible. They used them as a shotgun as often as they used them as a musket, with their 'shot' typically being smooth river gravel.
After the US Civil War, most of the settlers that headed West were poor, and a typical gun they had, their only gun, was a war surplus, muzzleloading, smoothbore caplock musket, typically about .54 to 58 caliber, with the barrel cut down. These guns were obsolete even before the war started and were bought by the North en-mass as a stop gap arsenal from every warehouse in Europe. These were used as a shotgun (about 28ga) more often than not.
Bushcrafting is about living in nature, and that means eating. Eating often means hunting. Aboriginal men around the world have always called themselves 'great hunter' with pride and accomplishment, and for good reason.
There is a video everyone should watch and it's Morgan Spurlock's "I, Caveman".
http://www.youtube.com/watch?v=_fS6aNQWbPQ
You see how badly they suffered, what they did or almost did right, and then figure out how that could be vastly improved. A single shotgun, metal tools, and a bit of know how would have made all of the difference.