With all that being said, I have 10/22 Takedown that I mounted a Bushnell TRS-25 way up forward, it looks similar to the Holosun 403r. It took some getting used to, such a small sight picture when its that far away with the clunkiness of the sight housing around. I kind of preferred having the small Sightmark up there because theres much less housing obstructing your view. But I don't believe I'll change the Bushnell, just took some getting used to.
Dot is about the size of a sprite cap, which I drill regularly at 20 yards, along with 20 Ga shells. and about the size for a beer can bottom at 50 yards.
Just some things to think about. I'd try both style sights and also try a scout set up rifle if you have the options to familiarize yourself before making a decision.
(I hope I don't get gutted for posting an auto in the lever gun forum
.)