BLACKHORN 209 POWDER IN STOCK NO FURTHER A MYSTERY

I've a CVA optima in stainless-steel. I even have the black horn 209 breech plug. I load 100 grains by volume of Blackhorn 209 that has a 250 grain Barnes bullet. I have discovered that you really should really use a good primer. Don't use the primers produced for black powder as this is simply not black powder. I make use of the CCI magnum primers