I agree w the auto shotgun recommendation. I took my Remington 11-87 and 870 express to the range for pattern testing. Both 20 ga w 28" barrels. The 11-87 is wood while the 870 has synthetic stocks.
The recoil difference was extreme. Despite Remington's most advanced recoil pad on the 870, the auto vs pump was night vs day. Both shot to point of aim. Most hunting shotguns shoot a bit high to hit a rising bird but not these guns.
(I put a kick-eez pad on stock of 870 to deal w face slap). 3" mags will rock the molars