I have a 12 F/TR with a 1:7 twist. I can't even close the bolt without seating the 77's so deeply that I crunch powder.

My rifle- The SMK 69's work well and I found the Berger 73 non VLD to be best for me w. 22.6 gr Varget. SMK with 25.0 Varget. Nosler Competition 69's never shot as well as the SMK's for me.