There are people who get the shivers when this stuff comes up.
It's n abiding principle of mine to never stick someone else's loads n my gun, but I will shoot their gun with their ammo. I pulled a lot of rounds that I received, burned the powder, melted down the bullets, and used the brass. Never again, any ammo that I can't identify goes into a bin for destruction.
Never an exception. Not even a single round. Throwing away ten boxes of reloads is hard to do,and you're going to get varying advice.
Imo, use a kinetic puller, resize and expand the primer brass with the pin out. Load as normal with the pulled bullets if they are undamaged.