A well hit turkey is not gonna die any slower than anything else if hit in the vitals....Hit'um right and they hardly go anywhere and die in seconds....
But the margin of error is very,very small...
A well hit turkey, as Joey said, will bleed just like other critters, they do have a lot of feathers that will soak some up, but blood will hit the ground if something major is cut....
Again, like Joey said,breast meat(muscle)hit birds are horrendous to track and find....
I agree with Joey too about shooting your most accurate BH...BUT...there's no reason, with proper tuning, that it can't be a big multi blade head with a string tracker attached....
You mentioned a 150 WW or a 4bl Stinger and a string tracker...good medicine
I like'um even bigger and prefer a big 160 Snuffer....
Joey, I still don't buy the doubling the strength by shooting thru them
That single strand running thru the bird rubbing on bone and quills is still only 17#...and a single strand can still break rubbing against treebark or something else even though there might be another strand right next to it....
The biggest thing on shot placement is to keep you shots in the upper third of the body....totally different than what we're used to shooting on mammals(lower third).
High they die, low they go!