RE: 10 or 12 3.5?
As far as the 20 goes i realy have never liked the 20.
evan when i first started out i was never inthrould with it.
I have been using a mosberg 500 in 12 3in for the turkeys.
But the 24 in barral and the compact sing shot has my interest up.
As far as long shots go where i hunt i higly dought you would see a terkey past 50yds.
i realty new to terkey hunting but on the ones i have taken i have gotten close.
The 12 3.5 or 10 would not realy be nessery.
but that the 2 chambering in the gun i am looking at.
I have not handel the 10 at all but i have shot a round or two out of a mosberg 835.