Do you have a range finder? If so, get several turkey outlines of the actual size neck and head then put at 50 yards. Shoot. Look for the pellets that hit the nick and head. You want 5 - 10 minimum. If you can't achieve that at 50 yards with either barrel's choke then try at 40 yards. Memorize if you are putting the bead on the top of the head or under the head or mid neck...you want to have confidence in your yardage, your shell and your aim.
Most of the turkeys I have killed are along the edges of fields and hardwoods so a 30 yard shot is possible if patient as the gobbler works around the area of the hen decoy. Soft putts and purrs once you see the gobbler or nothing. No need for yelps.
On the other hand, some gobblers "hang up" at around 100 yards and that is the game. If hunting public lands then the gobblers may come in silent or be silent the last 200 yards and take 20 minutes to close the gap. If on private, the gobblers may be gobbling every minute or so and never go quiet as trot towards you.
I would use a decoy and keep in mind a turkey's eyes move independent of each other and they can see 270 degrees so a pop up blind is a good idea. Do not drop two windows so one is in front and one behind you or your movement will be seen. Take a chair for inside the tent and call one in.
Alternatively, you can "run and gun" where you call and head for the gobbling sound. No tent, no chair, no decoy. You can cover a lot of ground this way and I tend to do this in the spring and in the autumn rely on the tent after pattern turkeys. No way to pattern a gobbler in the spring as they are moving around looking for hot hens so unless you roost a gobbler at sunset there is no way to guess where will be the next day.
Good luck.