Congratulations to your son and the Black Pearl. Those Nikon Pro Staff scopes are sure a good scope. They are one of my favorite. It sounds like your son did everything right and placed that bullet perfect. And Uncle Norby is right.. a 1/2 hole to start with is hard to argue with. Especially with pass through. Now your #2 son needs to get his hands on that lucky Black Pearl...

By the way, I hear muzzleloaders make excellent Christmas Gifts..