I bought 8 cans when it first came out and still have 6 left. I put up 100 charges in plastic vials at least 5 years ago and am still using them. They work fine, shoot to POA and kill deer.
I don't believe BH209 is hygroscopic like T-7 is. It should have the same shelf life as smokeless from what I understand...and I am still loading .270's with H4831 from WW II.
