Quote Originally Posted by DesG View Post
Not exactly an answer but I use explosia Vesuvit black powder made in the Czech republic and it works fine. I cant see much difference between that and Swiss but only £48/ kg.
I have a shooting mate that uses Vesuvit in his cannon (Ardesa Old Ironsides). He shot a 95 at last weeks cannon championships so he must be doing something right?? I use Swiss 1 in mine and my PB is 92, definitely a one-off as I've never been close since!