Reloading for 450 3 1/4" Black powder double rifle

[stug]

Found this, looked interesting

 

[ChrisG]

This is interesting! I have also heard that sometimes, an old double can be made to regulate with Trailboss powder. I wouldn't try it with the one that he is using in this video because of the soft damascus used to make the barrels, but it might be viable for other old BPE guns.