I use the 3.5 inch for turkeys,in our family we have a Remington 870,a Benelli SBE,a Benelli SBE II,and a Franchi 912. All of these guns have 3.5 inch chambers and all shoot denser patterns with 3.5 shells at turkey pattern targets.
But when I take any of them waterfowl hunting,I use 3 inch loads,the recoil of a series of 3.5 inch loads is too much for me.
But with only one or maybe two shots at a turkey,I want the densest load posible,and the 3.5 inch shells just have more shot in them and put more on the target in my tests.
If I wanted to shoot 3.5 inch loads at waterfowl,they would come from a gas operated 10 gauge to reduce felt recoil because of the heavier weight of the 10 gauge autoloaders.
