Wild_Bill_375: Your contention that "Deer shot square in the chest with a 270 will run forever" IS simply bogus and outright untrue - based on my significant experience in this regard!
I am certain I have shot and/or seen shot at least 100 Deer (of 3 species) shot with 270 Winchester caliber Rifles and nary a ONE of them ran off more than a dozen quick leaps!
Let alone run off forever!
The vast majority of the 270 shot Deer I have seen are dead virtually in seconds IF NOT SOONER!
I am just flabbergasted that you would write such a thing!
It takes all kinds I guess?
Hold into the wind
VarmintGuy