I've got a rem 870 super mag. Here in michigan we can only use shot at night, so i have a turkey choke and some #4 3 1/2in. My question is during the day i want to use buck shot. in the open areas i have a semi auto 243, but buckshot would be my best bet in the thick swamps. I'm lookin at #4 buck. Anyhow what choke should i use. Do i need to buy a full choke, or will the turkey still work. I think i should buy the full. Any comments