RE: cva optima
My optima likes 90grn loose pyro, kleenbore primer, and the 250grn(I think)shockwave. I get great groups with a cool, cleanbarrel. I also shot the 200 grain shockwave. I got great groups with it, I just decided to go a little heavier. I've killed deer with both and they both ended up just as dead.
good luck!
RBBH