I've only put a few LE rounds through my Marlins (all in .30-30). Three shots from a 30AS measured 7/8" (outstanding!). Three rounds through a 336CS measured just under 2" (certainly good enough to hunt with!). Point of impact was VERY different from more traditional fodder. Havent' hunted with the LE stuff, but I've stocked up on some in case my son wants to hunt whitetails over a field with longer shooting opportunities. (Of course, this would require adjusting his scope for the wunderammo).