No muzzleloader needs more than a 3-9x. I've shot deer to nearly 500 yards with 5x magnification with my centerfire. At 200 yards, or even 250 yards (the outer limits of a mag charged inline muzzleloader) 9x will make the target look plenty big. As for a drop compensating reticle, you might check out the Nikon Omega with BDC 250 reticle.