No matter what (with out a custom) a off the shelf gun does not fit, I have yet to find one that does.
So I get to look at all options
and put on an adjustable recoil pad (comb can be done with sanding or building up is not even that bad)
The stick gun is cheaper and can have less recoil while the O/U means you dont have to reach to pick up shells.
I am more of a "one gun" kind of person. But I have a long way to go before I am better than my Beretta 3901.