The Shockwave ads say they beat the powerbelts at 200 yards. Who shoots ML at 200 yards? In my woods, a 50 yard shot is the norm. Up to 100 yards is max for me so the powerbelts are the way to go, makes things so much more enjoyable. Going down the bore the bullet does not touch rifling. ON ignition, the bullet expands and engages the rifling on the way out. The copper jacket keeps lead fouling a non-issue too.