As far as i know, BPI and Winchester are about all that is out there. Could be others. If you really want to use it, just be sure to use the proper data for loads that use it. I would expect Bilozir has BPI stuff, Wholesale used to keep Grex. You may even be able to get it out of the US, don't know for sure, but it may not be ITAR restricted. BPI & WW can tell you that for sure. I haven't loaded shot in about 20 yrs., I'm sure others are more up to date.
Shot Shell Buffer Material.
Linear Mode
