While I generally like my triggers set with minimum overtravel, I also do a lot of precision shooting with AR's that inherently have greater overtravel. I personally have no problem maintaining small groups with either. I do think increased overtravel could mask poor trigger technique with follow through, particularly with heavier poundage trigger settings. I do have an issue with the comment "....smaller groups long range.". Once the bullet has left the barrel, your done, regarless of range. IMO.