This season and last season we have footage of a couple solid hits with broadheads where the arrow was protuding out the breast and they still made it up to 400 yards.
I think a dog is a must, but you better be able to call them off a downed bird if broadheads are involved.
Magnus Bullheads were my favorite head to use. It was not the most lethal head available, but it was safe for the dogs, would shear off wings, and lay them wide open with the right hit. It was also always easier to find because it never got buried in the weeds like a broad head will. The downside is they are expensive and on a straight away flush, the tail feathers absorb so much energy, the bird will fly away virtually unscathed. It is frustrating to make a great shot, solid it, and all you have to show for it is a cloud of feathers.
It is so much fun. Enjoy!