I picked up a 50 Cal CVA Kodiak a few weeks ago and it shoots like a charm. I am using 2-50 grain 777 pellets and 245 grain TC MagExpress Sabots.
I am pretty new to muzzleloading, but my Kodiak shoots just as nice as my Shotgun or .308. I get 2-3 inch groupings at 100 yards.
Let me know what you settled with.