RE: cva optima pro 45cal
try 223, 270 and 300 platinum powerbelts and 275 or 270(?)and 300 copper PB and drop your starting charge to 70grs of t7 top off at an max of 80grs.
try mmp or crushed rib sabots. with the shockwaves.
edit: check your scope bases and rings (if open sights check them).