Just curious what others are using for zero on your muzzleloader scope. Personally I will not take a shot longer than 100 yards with my muzzleloader, just won't do that even though the newer in line ML's with scopes can supposedly shoot accurately out to 300 yards plus. Those kinds of shots at 300 yards plus in my opinion are reserved for a western hunt for elk or mule deer at very long distances. Just not what we do in heavier forested close cover for deer here in Maine. I can't even remember the last time I saw a deer at 100 yards plus in the Maine woods and when I did, I definately waited for the deer to move closer before attempting a shot. In almost every case my opportunites have always been with deer under 50 yards with many more under 25 yards. So for this reason I have zeroed my ML scope to 75 yards thereby allowing me to just hold center mass at any distance between 25 and 100 yards and not have to worry. To make matters worse I purchased a Nikon Prostaff Shotgun Hunter 2-7 scope with BDC reticle that is mounted on my CVA Accura Mountain Rifle. These BDC reticle scopes are what is called seconday focal plane rather than first focal plane, in theory they sound great but here is the problem, although the point of impact does not change with secondary focal plane, the reticle does change when you change power settings, so in other words the 4 little circles below the center crosshairs change in distance depending upon the power setting. So you have to pick a particular power setting that you are going to use under field hunting conditions, test and confirm on the range and then stick with that. So here are the numbers for a 4 power setting, hold center mass behind the shoulder at all ranges between 25 to 75 yards with dead center aligned reticle, use 1st circle down under center reticle for 106 yards, use 2nd circle down under center reticle for 140 yards, use 3rd circle down under center reticle for 170 yards and 4th circle down under center reticle for 210 yards. This is based upon Nikon Spot on Ballistics software which you can check out on the internet. I have zeroed the ML at 75 yards using 96 grains by volume of Blackhorn 209 powder, CCI magnum 209 shotshell primers and 295 grain powerbelt copper hollow points with bullets touching under 3/4" at 75 yards. This particular shotgun/muzzleloader scope also has a 75 yard parallax which is different than the standard 150 yard parallax for a standard centerfile rifle scope. If I change the power setting on the scope than all distances for the four circles below the reticle change and all bets are off until proven true on the range and then carry a rangefinder and charts to adjust for varying power settings while in the field. I think I will be getting rid of this scope, too damn complicated!