DocGKR - Ballistics Expert
Some of you may be familiar with Dr. Gary Roberts (DocGKR on many firearm forums). He's a leading expert in ballistics testing. Here's a link to another forum where he discusses defensive handgun ammo. If you go back one notch in that forum, you see much more.
Changed My Way of Thinking
I've carefully read through the material and have changed my way of thinking about a few things. It was good stuff, particularly the Handgun Wounding Factors paper. The link seemed to be lacking on ammo comparisons and I would have liked to see more ammo covered, but realize/admit it is difficult to cover it all. Specifically to see the Corbon 135 JHP as mentioned below.
Anyway, I originally selected Fed hydrashock 135 feeling this particular round had adequate penetration yet might limit over penetration and collateral damage to innocent bystanders. I learned that this concern is an over exaggerated one, as discussed clearly in the report. The rationale is there and I understand it. The words "too little penetration will get you killed" rang clear to me and I understand it even in civilian situations. I have changed my way of thinking on penetration in civilian situations and earle8888 tried to point this out to me previously. He was correct and I was wrong. Earle8888 I hope you read this.
The paper also changed my thoughts on temporary cavity (to some degree -although I have seen in deer that I've shot that surrounding tissue does get damaged with major brusing/internal bleeding). It changed my thoughts on shock and the myth of knock down power. It's penetration of at least 12" that is needed and the edge always goes to the bigger bullet.
I would like to learn more about velocity and penetration. Specifically, I am interested in the Corbon 135 JHP due to it's velocity. If anyone has any data on the penetration of this ammo, say compared to the Corbon 140 DPX and the Win Ranger 135 and 155; I would love to see it. Please pass it along.
I am not immediately going out and buying new carry ammo to replace my Fed hydrashock 135. I am going to do some more research and focus in on some new ammo for my next purchase - something with more penetration and that I can shoot well in my PM40. I already know the Corbon 140 DPX will do the job, but perhaps there is something better to suit me.
Hey guys, thanks for helping me to think differently :7:about some of these important topics. Clearly, we all need to be open to learn, change and not be so stuck in our ways. Much appreciated.