I had a Simmons 8point on my muzzleloader for 5 years, and I have a Sightron 3-9 on my new muzzleloader, and both work perfectly. Needing a shotgun scope for a shotgun or muzzleloader is BS. The only difference is the parallax. Generally rifle scopes are set at 100-150 yards, rimfire scopes at 50 yards, and shotgun/muzzleloader scopes are set at 60-75.