I have had a Nikon Omega 3x9, with a BDC scaled for ml, with a 5" fixed eye relief, sitting on my Savage smokeless for several years.
I am generally a Leupold guy, but the fixed eye relief caught my attention, and it has worked. reliably and repeatable, for several years and a lot of rounds fired.
The price was right.
I purchased one several years ago and it went on a 12ga turkey hunter. Mine has Duplex type reticle. It was available back then with the circle or duplex. The 12ga is a thumper and the Omega has held up over 100 rounds. I like it. I tend to get bloody forehead experiences, magnum eye, with kicking shotguns and that long eye relief on the Omega has served me well.
Jim