I have hunted and hiked the west for more decades than I care to admit. I found many fired cases over the years. Sometimes there are many cases found together which I assume was some litterbug target practicing. However when I find a single or two spent cases, I stop and try to imagine the circumstances that lead to their abandonment at that place. Coming from big game country I try to imagine what he was shooting at. I don't litter, however when I shoot at big game, I leave the case for other to find in the future. I "harvested" a buffalo a few years back, and used an original 1863-1868 Sharpes carbine in 50-70 Government. I decided to use an original round of ammo from the 1870's. The round went off and a buffalo died. As much as I wanted to keep the expended shell, I left it where it lay. Somebody in the future may find this old brass and surmise since it was a great old buffalo round, was from the 1870's, and was found in buffalo range of the past, that this round must have been used to hunt buffalo. They will be correct, though 130 years later than they thought.