"Helping" an acquaintance downsize his hobby and has more than a few "cans" of powder. Always stored in bsmt. cabinets.
1-Unopened powder cans from 1974 prolly OK?
2-Opened powder cans from 1974 prolly NOT OK?
3-Are doublebased powders LESS likely to keep well in long storage, e.e. Unique?
Thanks Pards. Wally