On the subject of evidence.
There are two types of a,munition terminal ballistic evidence. First there is forensic, evidence based upon examination of actual wounds. The second is comparative testing. Neither tells the entire story of wound ballistics. I know of no conclusive forensic evidence that proves HP ammo is as effective as some claim. Forensic pathologist generally do not offer such opinions, but the few I have found stated that expansion is less important than penetration.
Forensic examination of wounds from hollow point are and have to be inconsistent because in any given caliber the HP performance is dependent upon bullet weight, velocity, and barrier interference. A HP bullet fired into a body through a barrier will do more or less damage depending upon whether the barrier be clothing, bone, auto glass, wallboard or other material. It is well known that the four sheet of denim barrier gel test often ends up with the HP clogged an not expanding. Barrier penetration is an important factor in wound ballistics. Hit a bone with HP and the bullet will immediately expand and that will slow it down upon entering tissue and that means inadequate penetration. Penetration has everything to do with reaching organs and major blood vessels. If the bullet does not go deep enough it’s lethality is vastly decreased. That is an observable fact.
All bullets do damage through hydrostatic shock. When a bullet is slowed down its hydrostatic shock is decreased. That is physics. The greater the surface area of a bullet the more resistance it encounters in tissue. That is why ball ammo penetrates much more deeply than HP. Still the HP and the FMJ are creating hydrostatic shock as they spin. But one is slowing faster and deeper than the other while one is creating a wider wound channel.
The above analysis led bullet designers to consider a bullet design that would achieve adequate penetration and achieve a bigger wound channel than FMJ without the excessive penetration of FMJ. Like FMJ they wanted a bullet that would not lose its lethality penetrating everyday barriers.
Hydrostatic shock is a product of velocity, bullet weight , and the RPM of the bullet. Put of a 2.5 inch barrel os achieving about 65,000 rpm as it leave the gun. When all bullets hit tissue they turn some of it into dense fluid. That fluid creates wound channel expansion over the bulletin diameter. By making flutes in the bullet it could create more fluid and at high RPM make that fluid do more tissue damage. Fluid under high pressure damages tissue. At the same time the modified ball round would slow down fastener than FMJ reducing penetration.
The scientific evidence of comparative Porcine Ballistic Gelatin testing is sound. It is why the FBI uses porcine gel to make comparisons of different ammo. No one claims that gel tests are indicative of human tissue damage. However porcine gel is made from pig tissue and that is very comparable to human tissue. There is no way to comparatively test bullet ballistics from different ammo in the human body so a substitute comparative medium has to be used. That medium is porcine gel. Fired out of the same gun at the same distance from the gel the ballistic performance of different bullets can be compared. It is reasonable to expect that if one bullet performs better than another in gel it will also do so in human tissue. Scientific deduction is valid means of presenting evidence
However when shooting a person barriers are also to be considered. Clothing and bone are two barrier that human targets present. There is an abundance of proof that HP does not perform as expected once it encounters such barriers. It expands to soon and slows down and achieves less penetration and lethality and penetration are linked. Shooting through auto glass, sheet metal, wood, wallboard will defeat HP. It will not defeat bullets like the Extreme Penetrator and Defender. There are test that,prove that.
In my assessment I have relied upon scientific testing therefore evidence. I have no forensic pathological reports to prove the effectiveness of fluted monolithic rounds or HP. I do know more people have been killed by ball ammo than any other kind because militaries use ball ammo. I know that fluting the solid ball bullet will stop over penetration. I believe based upon gel tests it will rip up tissue better than HP.
We will choose to disagree. we at human and believe what we come to believe. So be it. I am not going to further respond in this thread.