Scribe is right, you are gonna have your ups and downs its a matter of finding what works for you. PATIENCE is key. You cant expect to get out there and sniper after a day. I have two identical CVA's and one shoots better with the 777 magnum, the other white hot charges. I shoot both with premier 209 primers. I just get the best results with different charges in each gun. Also cleaning between every shot to sight it in is very important. You want to duplicate your first shot as close as possible and that means a clean cool barrel. You just gotta get out to the range, plan on being there a while, take multiple load set ups, and a ton of cleaning gear and get it!!!!!
It aint braggin if you can hit it!!!!