Haven't used Hunter much with 165s, with 180-185 grain bullets have had great results with 57-58 grains, to the point where that's pretty much my standard 180-grain load.

First time I tried Hunter that bullet weight was in 2007 with 185-grain Berger Hunting VLDs--before they were even called "Hunting" VLDs. Three-shot groups averaged a little over half an inch at 100 from my Ultra Light Arms Model 24--but the same basic charge has also worked well in a wide variety of other .30-06s, including a Sauer drilling with 180 Partitions.

“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck