The reason for no bites... is because what you have doesn't really have a great deal of (monetary) value.

Mixed brass, part of it military, part of it commercial, of unknown provenance...

No serious handloader or hunter is going to waste his time and (component) money trying to develop loads from such a mix.

What you have is plinking brass. It has some monetary value, but not a lot.

Driving a long way to sell it is likely to cost you more in (the somewhat hidden) costs of gasoline and wear and tear on your vehicle than any cash you're likely to get in return.

As has been suggested... pay it forward by giving it away.

Sorry to hear of the physical challenges. And God bless for continuing to pop those caps in spite of them.