I see no downside to the faster twist. I had my 7mm-08AI built w/ an 8" twist. It is extremely accurate with 150grn ScenarL's, a bullet that clearly doesn't need an 8" twist.
David
"Theoretically" a slower twist rate will provide better accuracy for lighter bullets in a given caliber. Something to due with gyroscopic imbalance and spin rate. The faster an unbalanced bullet (very rarely are they perfect) is spinning, the more likely it is to go off course. Probably wouldn't make much difference in the hunting fields, but that is the reason why benchrest competitors and LR/Palma shooters use the slowest twist that will comfortably stabilize the bullets they use.
