I ask, “ Why doesn’t the manufacture test their bullets?” But, I think I know the answer. The bean counters want the bullet on the market and the engineers answer to the bean counters.
Pretty sure they test them to the best of their abilities in labs and they probably do have a little bit of field testing before they release those products to us but there is no real testing done until they turn em loose and hunters are able to test them on living breathing animals under real world conditions on all sizes and structures of critters.
