If you hit him in the head, he's as good as stuffed. Heavy shot is great stuff.
I misspoke in my post about my bird, I used the Federal loads with Heavyweight shot. That must be there brand name?
In the past I have used #4, #5, #6 and the old Remington Duplex loads. I've been back to #6 for the last few years due to the claim that this new shot is 38% denser than lead and the improvement in wad design. I paid $45 for a box of 10 two years ago for them, crazy. Marketing is a wonderful tool!
