G'Day Tamara;

I suggest you contact AWM for specific help.

Generally speaking, such materials should be kept in a cool, dry, dark place.
propellants used in cartridges tend to be quite stable; the same is NOT true of
the high explosives used in artillery shells, hand grenades, etc., but I would
be surprised if you have any of these. If your intention is to display
cartiridges, I suggest removing the propellant and storing it separately (or
discarding it).

Matches, too, have relatively stable chemicals, but, because of their phosphor
compounds contents, are much more flammable.

regards to all at NSW HHT!

Harry Needham
Canadian War Museum