Mine is a 15" TC Custom Shop barrel on a Contender. I have never hunted deerwith the 6, but do occasionally use the 7mm TCU for deer. My six is used to help control these PA ground hogs and is quite a shooter. Twice I have shot a 5 shot group at 100 yds that measured an honest 5/8". Mine loves IMR 4198, but I am using lighter bullets. I did some work years back with heavier bullets, I'll look at my records to see if I have any data that could help you. Keep us informed on your progress, I'm very interested.
Sent from my SM-G973U using Tapatalk