Oh I agree .I plan on only using this for my 223 for varmints /squirrels and coyotes.If it was well kept I would think it would be fine. The problem is that you don't know how well it's been kept for 37 years.
If you decide to use it, I would use it for target shooting and not for hunting. You don't want to take any chances on the powder when you may be looking at the animal of a lifetime.
Well I am not a certified powder-ologist, but can tel you this, when I opened the cans which I had found that were bad, there was no doubt about the orange smoke colored cloud that came out of it. Didn't have to smell it, didn't have to ask anyone, and didn't have to be told to get rid of it. It was VERY definitive, orange smoke rising from a bottle of powder just ain't right, no matter who's brand it is.How much dust is too much? Any?
A friend gave me a can of Green Dot a few years ago. He had kept it in the garage. Noticed as I was pouring it in the measure, a very small amount of dust came up.
Didn't see any red, or smell anything funny. I've noticed very old powder may not have any smell at all (still have some WWII surplus 4831 around here, somewhere).
Curious about what the powder-ologists may have to say. I have not yet fired any of the Green Dot loads. They are reduced loads for my .338 Win Mag with cast bullets, if that matters.