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 by using a 250 grain Barnes bullet. I have discovered that you actually need to use an excellent primer. Usually do not use the primers produced for black powder as it's not black powder. I use the CCI magnum primers only.