Do you want to start a long-winded discussion?from Hodaka --
Do you think anyone has compared the 6.8 SPC to the 6.5 Grendel?
Bottom line -- for hunting, about equal for the first 200 yards, with the Grendel edging the 6.8 between 200 & 300 yards and the Grendel outshining beyond that. Doesn't matter whether the barrel lengths being compared are 10", 16", 20" or 24" the comparisons will be more or less the same.