i was in the exact same position... i cut the full choke at 19" and kept the mod. threw a set of truglo sights on the cut barrel rib and call it a slug gun, the 28 mod is my duck barrel.
my suggestion is pattern the barrels first to see which shoots better... in my case i would have kept the full choke as a turkey barrel if it shot tighter.
How have the truglo sights held up you for you? Which ones do you have on there?
I checked some of them out online, some look kinda cheap, not so sure they'd hold up. But I am considering the gobble dot (man I hate that name though. ) magnum pro or whatever they're called. Just because they fit within my skill level for installation and seem fairly robust and fully adjustable.
Looking at sight sets from a remington 700 also for the other option, but man they're more expensive and would require either soldering, d&t, or JBweld'ing them to the barrel. (i heard the gasps). 2 of those options are beyond my skill level.
I got the gun today, nice looking old unit. I forgot how nice the triggers are on these things, man, it just breaks like glass. And the action is so slick, hold it straight up and push the slide stop and she just drops right open. Lovely. Im honestly not even that upset that its not a slamfire model. I've owned one of those in the past, was a thing it could do... never did slamfire it after the first time i tried it. Kind of a pointless feature really. Or maybe I'm just telling myself that. Please don't try to convince me otherwise.
Wood is pretty rough on one side and the bottom with a lot of finish missing, might re-finish that with some tung oil or something. Otherwise, the metal parts are blemish free and quite nice.
The 30" barrel is humorously long. Good grief lol, I've never owned a gun this long, she barely fits in my safe hahaha, has like half inch clearance going through the door.
For this reason alone, I'm half tempted to cut the long one. It will have to print significantly better than the moderate choke to keep it over the regular barrel.