I used a Rem 1100 Mag with a Poly Choke for 25 years on everything from quail to Geese, Turkey. Then got a Benelli M1 Field. 20 Ga. Camo. What a difference!! Use it from Quail, Doves to Ducks, Geese, Turkey. I use a good choke & 3" Turkey Ammo. No problem slamming them at 50 yrds. Light weight too. 20ga is great you just need to match up the choke to the ammo. I use Rem Hevi Shot and a "Briley XF" but there are more turkey chokes than the stars in the sky. The last 14 years I hunted Turkey with a Bow. Find it more challenging.
Now you can get yourself a dedicated Turkey Gun. I am sure you can find used ones that have not been fired too much. They have short Barrel 12 Ga 3 1/2", pistol grip, recoil reduction stocks and red dot sight. Pretty expensive new, but you can find used.
If you have the funds and want an extra shotgun go for it. Get what YOU want.
Personally, after many years of wing /bird shooting I'll go for the 20ga every time. Light & very low recoil and very deadly. I haven't taken my 1100 mag out since I got the Benelli 20 ga unless I loaned it out.