Just run a low power variable like a 1-4 or 1.5-6 with an aluminated dot and an FOV between 60' and 100', keep it dialed down to the bottom end and you can shoot it like a red dot with both eyes open. If one hangs up out a ways you have time to crank it up in power if you need it.
Here's a a 1-4 Leupold on a drilling, enough FOV to shoot birds on the wing or running coyotes with the shotgun barrel and it will still shoot sub MOA groups at 200 yards with the rifle barrel.

Same size Leupold on a combo gun 12ga/22 Savage Highpower. After rolling one with the shotgun at 40 yards he ran straight at me at a dead run, killed him at 6' with the rifle barrel. Set up like this it will still deliver sub MOA groups at 300 yards.
My bolt guns carry 1.5-6x40mm scopes and work about the same