I have 2 cva ,an apex and a optima v2 . Both of them shoot 100g Blackhorn 209, 300g shockwave , federal shot primers . Super consistent and great shooters. I highly recommend the Blackhorn, there is a Blackhorn breach plug to make sure you get a hot enough ignition. Do some research and see if the one you are serious about is compatible with Blackhorn, once you shoot it ,you'll never shoot any of that other garbage ever again .