Pretty amazing stuff Rich, congrats to you and the hunter!
You sure you did not squeal a little bit?
I have shot a lot of moose in Alaska but never a Shiras. They seem to stay on their feet and not know they are dead.
That little 6.5ss with a matrix bullet seems like a power house combination, although I have zero first hand experience.
I heard from new owner from Matrix bullets on Saturday. He assures me he will have 150-160's in November.