Been reloading for about 50 years, have lots of old powder some 45 years old. Does it ever go bad? Was working about 6 years ago have not been shooting since.
As long as it's been stored in sealed containers you should be good. Smell it first before using it. If it has a rotten egg smell, it needs to be disposed of.
I've got some shotshells from the 40's with paper hulls and they still shoot fine.
I looked at what Bullseye and Unique sells for now so I don’t want to replace it. I know I tried some of the primers and they work fine. Thanks will load some and see