RE: BH209 Cost per shot scale.
Not that this will be news to anyone, but my Pyrodex RS load of 100 gr works out to less than half of the BH 209 price per shot.
I still want to try BH though, once my Pyrodex is gone. The additional cost is peanuts considering I don't shoot much at the range, and only take a couple or threeML shots per season.