I have a CVA Optima Pro and love it. Didn't know much about muzzleloaders until I joined the forum and these good folks got me all set up. I'm shooting 100 grains of T-7 loose powder, a Nosler .451 260 grain HP bullet, MMP-24 sabots and winchester primers. Here are the results:

2" high @ 50 yards
2.75" high @ 100 yards
1.5" high @ 125 yards
0 (near gead on) @ 150 yards
4" low @ 175 Yards

Here's a photo of a 100 yard group:


I took this doe opening day @ 180 yards.I held right at the top of her back and hit her right in the boiler room. That Nosler does some serious damage.



Took this buck last Thursday at 136 yards. I held it right on his shoulder and that's where I hit him.



Like I said, I love this gun. I hope that this helps you.