Wideners has 8# Unique canisters...
by Bryan 
, Ft Worth, TX, Friday, August 05, 2016, 13:45 (2970 days ago)
big thanks to Hoot for the heads up. Hazmat is $30. Link is below...
https://www.wideners.com/reloading-supplies/gunpowder/powder-firearm-type/pistol-powder...