picatinny rail level on a shotgun

[Beaneater]

Has anyone ever put a picatinny rail level on their turkey shotgun? I'm new to using a Red Dot sight and was wondering how it worked or helped out.

 

[EKYHunter]

Has anyone ever put a picatinny rail level on their turkey shotgun? I'm new to using a Red Dot sight and was wondering how it worked or helped out.

I have not, but lots of folks do with great success.