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 one hundred grains by volume of Blackhorn 209 which has a 250 grain Barnes bullet. I have discovered that you really need to use a great primer. Do not make use of the primers manufactured for black powder as it's not black powder. I utilize the CCI magnum prim