RE: Can you reload Twin Cities Brass?
I never met a US military case I couldn't reload. Most of my guns have lived on it, either as is or made into something else.
Only irritating thing is the primer pocket. Get you the RCBS primer pocket swagging tool or better yet Lee used to make a little hammer punch tool that was faster and easier by far.
DON'T try to ream them. Swage them out.