I do like side by SXS and OU shotguns. I grew up hunting with my Dad's 311 in 16 gauge, had lots of fun days with it. I hunt now with an old Lefever 12 gauge, full and modified, 2 3/4" chambers and it does the job for me. The forcing cones were lengthened and polished which helps with the pattern, some deformation can occur at the chamber as some of the older gun were built before plastic hulls and were chambered accordingly for paper roll crimped hulls.
I don't have the range others have with tightly choked guns, or 3" or 3 1/2" chambers, but I enjoy hunting with the old gun. When the mood strikes some days I even take out the old hammer gun with 2 1/2 chambers choked full and full. On my bucket list is building a flintlock fowler, hopefully sooner rather than later. It is appealing to me to attempt to harvest a turkey with a gun I made as well as the call
I had a day this spring when I watched a tom and some hens, he was strutting at 50-60 yards and I didn't attempt a shot, but enjoyed the show. There might be some limitations, but the old guns will do the job if you call them all the way in, and are patient.