I used to have a Zabala (Spanish-made) side by side 10 Ga. double barrel. Even though it weighed around 11 pounds, that thing would kill from the front and cripple behind. I made the mistake of pulling both triggers at the same time exactly once. The triggerguard cut my nuckles and it knocked me up on one leg. It made the geese fall like rain though. Of course, I'm a long ways from being the biggest man out there & I probably weighed 160 pounds at the time. I shot many ducks and geese with that gun, but I sold it to a friend, who killed a deer with it @ 55 yards with one head shot. He was a huskier guy and that gun suited him better.
I know RedDawg on this forum uses a 10 gauge and he absolutely wears the turkeys out with his. Good luck with whatever firearm you choose. Just remember not to sit with the back of your shoulder tight up against a tree when you shoot a 10 gauge, 'cause it might leave a mark.
Luck Counts, good or bad