I've bought some of this stuff at gun shows and had closer to an 80% failure rate between duds and hangfires. Pulled it all down for the bullets. Powder was mostly good, although without load data I sprinkled it all on the garden. Primers were mostly so dead they wouldn't even smoke.
The 70s vintage stuff is much better.
IMHO, pull it down for the projectiles, sell those (196g FMJ), burn/scatter the powder, and recycle the brass (berdan primers). Or sell the whole thing to a collector not interested in firing them.