if it's acidic smelling or rusty in colour, it's gone bad. otherwise load'n'shoot!
Where can I find a reference to this statement?
I have WW2 surplus powder, later named H4831.
I recently tried it over a chronograph and it is 100% good.
I bought a box of really old stuff from someone's estate dealing. There was about 6 of the 12oz square cans with snap caps of Bullseye. Folks informed me some time later that this was likely close to 40 years old. I wish I'd have known that at the time. I'd have kept the tins.
Anyway, at first the powder was fine. But towards the end of it I was getting a LOT of squib loads. I was just about to give up reloading when I realised that there WAS powder in the cases but it simply was not being ignited by the primers. So the last tin and a bit was used for garden furtilizer.
I have used powder (and primers) that were easily 40 years old. No issues. The can is a good indicator, if its rusty and beat up, the powder is probably the same.
C
...... I bought a full can of Unique from the same guy, also with the snap cap, but it's unopened, so I have high hopes for it.
The opened but nearly full can of Unique I still have. I've used it for fire forming rifle casings for my single shot rifle. It went BANG! consistently. So it's possible that Unique isn't as sensitive to age as Bullseye.



























