I'm on my second Navy Arms Pietta 12 ga SxS. I used my first one for close to 20 years, taking virtually every bird up here with it, and in fact doing all my duck hunting with it for half a dozen years. I foolishly let it go when steel shot was finally required up here, several years after the rest of the nation. Bismuth wasn't available yet, and steel was a decided no-no with existing wads.
Got to missing it, and finally replaced it with an identical gun this year after several years of looking.
Both mine have been cylinder bore in both barrels, i.e., no chokes at all. That certainly eased loading but limits range a bit. The best I could manage was a more or less equivalent to a MOD choke, but still held my shots to 30-35 yards max. It's pretty easy for me to put the duck decoys closer and bang away, but you might not be so happy with open chokes for turkey.
Steel shot can be used in them with the right plastic wad. Some guys cringe and get all lectury about no plastic wads. Duddn't matter to me one way or the other, but I'm not a fan of steel except at very high velocities (not possible with black powder), so the plastic wads aren't necessary. I used WW12R wads now an then back in my lead shot days to produce those MOD patterns from a CYL bore, BTW.
Rather than using bismuth, I've been working the kinks out of ITX shot recently. I'm downright impressed with results, plus it's cheaper to boot. Still haven't drawn blood with the stuff, but our duck season is less than a month off.
Pedersoli has SxS shotguns available new, plus you see used ones for sale. Some have screw-in chokes and some don't. If I was in your boots, I might consider one so I could use a tight choke for turkeys, then put in CYL or slightly tighter choke tubes as the hunts dictate. Lotsa guys get all quivery and lectury about screw-in chokes too, but they're punching keyboards and you're hunting. Just remember that everything has to be loaded in the front end and many wads aren't likely to fit through a tight choke, meaning you'll have to unscrew the choke to load the gun.
There's a jug choke option too, which amounts to reaming the inside of the bore just back from the muzzle a little to produce tighter patterns. Haven't had it done on mine yet, but giving it some thought. User reports are very positive about results, though you'll get quivery and lectury talk from some of the same folks on jug chokes too.
Basically it's your hunt and the details are up to you. The guns and stuffings are out there, and you can do right well with them.