As a turkey nut for over 40 years, I'm gonna say whatever coarse shot patterns the best from your set-up.
I'm running 2 1/4 oz of copper plated 2's from a BPS 10 ga and coyotes just don't walk away from the front of it. A looooooong way in front of it. Yotes generally hit the dirt so hard they bounce. Have also used #4 buck from same with OK results. BB shot doesn't pattern worth a crap. Go figger… ???
The Winchester Longbeard Turkey loads in lead #4's should hold lots of promise. The pattern VERY tight through the Indian Creek Black Diamond Strike choke tube. And the penetration of the HTL pellets can allow you to go down in shot size while going up in penetration.
