If your CVA is like mine, try 90-100 grains of Pyrodex or a FFg powder. 85 grains if your shooting Triple Se7en FFg. And a 245 grain Aero Tip Powerbelt or a 348 grain all lead Powerbelt. They shoot excellent out of my Staghorn. Also the Staghorn with 90 grains of Goex 2f will shoot the 240 grain XTP's excellent.

Good luck with your rifle. New rifles are fun!!