Decoy will be 15 yards. Good chance she’ll be blasting one off the decoy.For under 30 yards no way I'd use bigger than 6's. Probably want more than imp cylinder. I'd go with a factory full unless you really certain it will be sub 18 yards, then it won't matter what choke, or if you even have one screwed in.
Edit: for sub 20 just use a 7/8oz #8. Hopefully won't penetrate the feathers in the breast and ruin the burgers.
Decoy will be 15 yards. Good chance she’ll be blasting one off the decoy.
She’s 12. Everything is sporting.Make it sporting.
I suggest 000 buck, from a slingshot.
Actually 15 is tough, most loads/choke combos won't be much bigger than a cantaloupe.
Imp Cyl will be good assuming it doesn't actually hang up. I'd still give up on the few inches you might gain over full for the yards you will gain on the other end.