I tried many of the Nosler 64 Bonded in several rifles with twist rates varying from 1 in 7" to 1 in 14". I used only two powders, TAC and H4895. The most accurate loads would have been adequate for hunting - around 1.5". I gave up on this one and went back to the Sierra 65 GK.
I have no used the Sierra 65 GK but I had exactly your luck with the 64 BSB from Nosler....gave them up pretty quick. Shot a couple deer with them and if anything, I can say the damage was excessive.
