I don't know the answer just my observations. Sample of one guy. I have a Remington 700 in 308 1/10 twist. It will not shoot 150s over about 2600 fps without loosing accuracy. , but dotes on 165 and 180s at normal velocity. I asked a friend of mine who was a military sharpshooter about it and he said that some 308s do not like the 1/10 twist. and they had even tried 1/14 twists in the 308mwith 150s. I said that my 3006 used 1/10 twists and were exceedingly accurate with 150s at 2900 plus. There was no explanation just that's what they had found. I have another 308 (Winchester 70) with 1/12 twist and it handles the 150s quite normally. So I guess its just the kinks of individual guns. Good luck with whatever you decide.
I have a Remington .308 that gave poor accuracy with most 150's and low velocity. I've just set the barrel back one thread (0.0625") and had the chamber re-reamed with a throatless reamer. It shoots the 150's much better now as there isn't the massive jump to the lands.
