To tell you the truth most folks can't tell the difference when shooting freehand at the range they group pretty close together out to 100 yards. From the bench out to 100 yards there is a little difference. Think about it there is no powder and only 15 gr of weight difference. Unless you are shooting over 100 yards I woulden't worry about it. One thing to remember tho is when you are out in the back country and need ammo cause you lost yours or whatever most back country stores carry 150 amd 180 gr ammo not many that I found carry 165. Mike