Given my initial/limited exposure to 777 powder (pellets and TC Shockwaves in my Triumph), I was skeptical as to how that would perform in my friend's CVA and I persuaded him to spend on a bottle of BH209 as well.
In view of the results with his new rifle, my friend is pleased that he would neither have to bother with loose powder nor have to further invest in a separate CVA breech plug (compatible with BH209). I'm happy that I can now relieve him off that unopened bottle :) since personally I intend to use loose powder only moving forward.
I've ordered some of the BH209 plastic tubes sold by Cabelas that would assist with rapid loading with pre-measured charges of loose powder particularly at the range. Carrying a couple in the field will be convenient too.