I, have a Nikon Slug Hunter. I do not know if this scope is holding it's zero or if it is my ammo. I had it on a H& R Slug Gun , then I purchesed a Henry 44 mag. and put it on that. At 100 yds I am getting 4 in groups. I have used manufactures ammo to include my reloads. Not only am I getting 4 in groups I seem to be hitting the target all over the place. 8x 11 target at 100 yds. My question is does any one have one of these scopes and how does it perform? I am going to call Nikon and see if I can send it back to get looked at.