Whitetail,
I purchased a T/C SS 209/50 last year. I had a lot of trouble getting the right load to group. I finally settled on (2) Clean Shot pellets, Nosler 44 mag 240 gr hollow points and Nosler Sabots. I am well pleased with the results.
I tried some suggestions from this forum with very little luck. You may have to experiment, Don't get discouraged like I did and start blaming T/C. It will come around when you get it right.
Miike