Sonny,
What are you stuffing your 39 gr BK's with? I'm just starting R&D on my LVSF. The factioy 40 gr Vmax left a whole lot to be desired, to the point where if that was the best the rifle would shoot, I'd rebarrel it. I tried some handloads with 39 BK's, 40 Vmax's, and 40 Bergers. I used both RL 15 and 10x. I seated the bullets as long as the mag would allow, and that's still nowhere near the lands. Remmy put a real "lawsuit avoidance" throat in my rifle. All three shot sub moa, but barely for the Vmax. The BK's shot the best of the three at around 3/4" or a little less.
There seemed to be some stress in the bedding. Remmy's idea of pillar bedding in that rifle is a joke, nothing more than a sales gimmik. So I hogged it out, ground out the speed bump, centered everything up and gave it the Marine Tex treatment for the whole action and about 1" of barrel. Now all I have to do is wait for the monsoon to stop!! I have some 40 gr NBT's, but havn't loaded any yet.
If you don't mind sharing, let me know what you're loading to get your best groups with the 39 BK's.
Thanks,
F1