I agree with bald9eagle, getting the bird close is optimal. I've been hunting turkeys for a while and have found that they don't always come runnin to the sound of a call or a deke. Where I hunt, there is quite a bit of pressure and the Toms wise up pretty quick. If I have a Big Tom at 50 yards that won't come in, I know I can drop him with Hevi-13. I have also patterned and worked with my choke/ammo combination enough to be confident as I know just how my shot will act at different distances. Hevi-13 is dense enough to penetrate at great distances and patterns out of my gun very well. Every year I get better at calling and figuring out the birds, but it seems like they get smarter too.