I saw on the excellent lock timing tests that Swiss Null-B powder came off very well. I just noticed on the Backcreek Gunshop powder list that they show Null-B.
Since I will be at Ft. Shenandoah, the home range of the N-SSA for the rest of this week and the shop is at the back gate I wiil get a bit if it is available. If you have an acquaintance going to the nationals you may wish to have them check for you if you have an intrest. Good shooting ! Lon