I'm a boy, boys play in the dirt. I shoot dirt.
I do the "Scientific Shoot Dirt/Mud Test".
My Mentors and Elders did this, I recall comparing the same bullets recovered from critters and dirt. Pretty darn close.
I get bigger and work in a OR, cannot tell what bullet makes what wound until we get inside. Humm, darn things often times resembled the ones shot in dirt, and other critters the Surgeon and I commented. Then we commented how dirt resembled ones taken from critter...okay so the critter on the table only had two legs...
I appreciate studies and baselines. Still I use what is handy to me to get a baseline to compare by for my needs.
Tire gauges vary, I use mine to keep all 4 tires and spare on my truck to a certain PSI reading.
I use Mom's tire guage on her vehicle.
Our guages read different the same tire being checked. We have respective baselines and use respective gauges to keep respective tires at psi reading.
Someone else's tire is going to read different as well.
Use what you have, get a baseline, then when you use that ctg/bullet in a game critter, compare.
I and others can share taking a bullet of a human body does not always match what folks think...variable exist, variables change results.
Folks shoot building materials to see how a round does to get an idea ...interesting thing is , a difference exists b/t shooting say for instance drywall up against a berm, and drywall actually in place in a bldg.
Same goes for shooting a pane of glass, and the same glass installed in a pane...
Lots of ammo components differ too...
No holy grail in anything...just not.
Me...I am going for tennis shoe shuffle and do my best to NOT get hit...
If I am in immediate danger and no other way, Shot placment and Lady Luck please.