I'm in the 12 bore group for the gun that can do it all but relize not all hunters do it all.The 16 is great and better if you handload.The twenty can come close to the twelve in loads but then you wish your light gamegun weighed abit more.The 12 gauge target loads are wonderfull for the game you shoot most and alot of times will cost less than the Wally world loads in the other guages.When starting out with a new gun type (Good SxS)I believe you are better served getting the twelve and then start on finding your niche guns