Okay, so maybe something like this for earlier season sharptails and chickens. Federal 16 Gauge Ammunition Game Load H1606 2-3/4" 1oz #6 1165FPS

And then could bump up to 5s at higher velocity if I decide to use the 16 on pheasants.

My current pheasant gun is a 12 ga Franchi Affinity which thanks to the stock adjustability fits me well despite being tall with long arms. I use heavy #4s on the public land roosters I am hunting thru mid January and had good success even with some longish shots last fall.

Another question while talking 16 gauge. If I am hunting an area that is 80% quail and 20% roosters, thoughts on what you would carry in the gun? Just those #6 Federals or drop down to 7 1/2?