When I started hunting Turkeys 25 years ago I bought 3" #2,4,5,6 and 4x6. I have been shooting them with 4x6 duplex as they patterned better than 5's. But 5's will do for me just fine.
If I was starting out again I would start here.
https://www.hevishot.com/catalog/magnum-blend/I have heard great things about the 5,6 and 7 loads.
Anything over 40 or 45 yards with a factory shotgun can be hit or miss IME. It is all about pattern density.
Good luck and shoot straight
Bob
