Let me add, if your powder dates from 1994, go use it. There have been some notices of 80's powders that went bad in the can, if you can does not look like this, and reddish rust does not waft its way when pouring the powder, your powder is probably good.
I have recently loaded some 1992 vintage IMR 4064, there were little rust spots in the tin, a neutral smell to the powder, but I am shooting it up as fast as I can.
