I'm trying to find some info for loading the BPI RSS-12 Rigid Structure Sabot
After doing some searches, I have found these threads and there is some good info regarding its predecesor (the grey ones). However since the design was changed the home load data seems to have tapered off. I've seen the possible need to mod the arms if they prove to stiff by drilling on the base to promote better separation.
I am getting great performance out of my Saiga with Lee 1 oz slugs (currently have only tested at 50 yards) and I'm looking for some long-distance loads using a rifled choke. My ideal pie-in-the-sky for a saboted load would be good deer-killing groups out to 150 yards, which for me would be the extreme limit for shotgun shooting in my area.
Here are those threads I mentioned: