I bought an 8lb canister of powder at an auction last summer. The canister was marked red dot. It was old, a cardboard container, but looked like it had been stored well. The powder looks good no rusty looking powder or anything.
Trouble is there are very few red dots in there, way less than I remember in the last can I had. As I study the dots that I can find it looks like they are loosing their color. Several of them have only about half of the flake colored, and that is faded.
I guess I will go ahead and try it in some light pistol loads. My loading books show it loaded in very light charges almost the same as bullseye, so if it isn't as advertised the charges I will be loading will be way underloaded for any other powder.