On and On and …
I could drone on like this and so could most of you. The point is none of us and none of our rifles, cartridges, or bullets can guarantee a bang flop response from much of anything larger than, say, a prairie dog.
So we should give up the search for this particular grail. It’s no more real than the Holy Grail of Arthurian myth. Instead we should perfect our bang flop shot placement. This would be a brain or spine hit from the withers forward. The safest place to attempt this is on the high shoulder, slightly forward of center. Brain shots are risky. A deer can flick its head in an instant, putting your perfectly aimed bullet in the jaw, nose, or meat of the neck.
With any central nervous system hit and immediate drop of your quarry, anticipate a Lazarus. Stay on the downed animal (with your sights and loaded rifle, not your boots or butt) for a minute or two. When you do approach, be alert, loaded, and ready to shoot. That doe pronghorn of mine had to have been lying there “dead” for five minutes before her resurrection. I once had a Dall ram wake up and depart while I moved around a rocky outcrop. I was lucky to finish it from 500 yards with a deadly accurate Remington M700 in 300 WSM from the Custom Shop.
Bang Track a Smarter Approach
Bang track is a smarter tactic than bang flop. Unless you’re hunting where a fleeing but mortally wounded deer can escape into a no trespassing zone or some horribly inaccessible habitat, go for the big sure target, that 8- to 12-inch circle of lungs and heart in the chest. Then expect to track it. Most animals so struck expire inside of 100 yards. On rare occasions one might make it 200 yards. Anything farther is extremely unusual, most commonly the result of a fringe hit or poor terminal bullet performance (insufficient hemorrhaging.)