I was reading yesterday that the metal in the chamber area is a little thin compared to the Beretta and Browings. No personal experience though. I have been kicking double barrel "tires" myself.
Any decent .12 gauge and then get a good Turkey choke tube. I use my Browning Gold Hunter 3" that I use for other general purpose bird hunting . Does a great job.
To me the rifle is just a tool. Might have to adapt to a lesser one..shorter shots.. but hey it would have to be bad situation to have to sell off your herd.
I recently sold By Bushnell Legend 1200 RF and bought a Zeiss PRF. The both have a bullet drop calculator thingie. I can range farther with the Zeiss, but see that their is even longer range ones out there. Just depends how far you want to judge distances.