I have a Leupold 1x4 shotgun scope on my 45-70. That's because the shotgun scopes have a parallax of 75 yds while rifle scopes have parallax of 150 yds .My shooting of deer is usually withing 75 yds. The Leupold also has a heavy cross hair for the shotgun and a thin crosshair for the rifles.I replaced the heavy with the light crosshair. As far as I know that's the only difference.