The 162 eldx is suppose to be stable in a 9.5 twist rifle, but the 180 eldm would need a 8 twist barrel. When you run both in a calculator, there is a very very slight difference. What am I missing? 575 ft. I have shot the 180s and they seem to fly well in my savage with a 9.5 twist. Shot out to 1000 yards both times out. On paper at 300 yards they are perfectly straight. The loss of bc is 6% at 575 ft and no loss at 7000 ft( elk country). What am I missing?