RD 869, 4# in a 6 x 14 cardboard tube

[William Yanda]

Seller claims it came in a bunch of reloading stuff, shotgun perhaps. Online search links to 50BMG surplus. Anybody here run into it before?
Thanks
Bill

[runfiverun]

RD-869? I think it's surplus H-us 869 a super slow rifle powder for like you found out for the 50bmg.