I'm with Mohr, you're more likely to get the range you want with less tweeking with a ML than a shotgun.......I have an Encore 209X50 that will take a deer at 200 yards useing Barnes expanders (but I have to hold high)....but also have an 870 with a Hasting rifled barrel that will do the same when useing the Hordney SSTs sabot slugs(but I have to hold high with it too)...but it was a lot easier to get there with the Encore than the 870....every shotgun is going to perform differently.