Congratulations of the deer. Muzzleloader power is really something to see once you shoot one. I checked my Wal Mart today and learned they were sold out of everything. Someone came in they said and bought them out... just my luck.
I shoot shockwaves out of my Black Diamond XR with the same load you use and the accuracy is really excellent. I never got a chance to try them on a deer this year but it is nice to know they work so well.....
That is a heck of a buy you got there....