I was given some old winchester powder from a lady who's husband past away several years ago. It looks like shotgun powder and would make sense as I saw three sets of Mec reloaders. One pound (am at work and can't remeber) was in a metal can. It resembled a brake fluid can, white and light blue lable, 562 maybe?? Anyway the other was in a large coffee can. It seems he used to partner up and buy a keg with freinds. The powder looks good, light gray smallish flakes (looked like win 231) It has a hand written lable on it, but cant make it out.
Where can I find info on obsolete winchester powders??