hamiltonkiler,

All the data I have seen says the 77s won't stabilize with a 1:9 twist.
So I haven't tried either of the 77 gr SMKs or TMKs with the 1:9 twist rifles when their accuracy started to fade with 73 and 75 grain bullets in both rifles.
Based upon that experience and the stabilization predictions, I have kept my 77 gr SMKs and TMKs for my 1:8 twist that shoots them very accurately.
But with your results with a 1:9 twist, I may try some 77 gr SMKs and TMKs with the 1:twists just to see if it was the bullet type not the bullet weight.