Thanks for the video. The core-jacket separation seen in the video is why I hope to see a bonded JHP offering that pushes a 200 grain projectile at about 1000 fps. Hopefully it would penetrate a little deeper (16-20") and offer good performance through common carries.
Until that day comes, I continue to carry 40SW most of the time and just use my G20 loaded with Hornady 200 grain JHP as a backpacking gun.
The XTP isn’t boned but I’ve never seen fragmentation or jacket separation with it.
Almost 20" in this test: http://www.youtube.com/watch?v=XIeiWem_xSs
17" and 22" in this test: http://www.youtube.com/watch?v=mEqEC8mZLg0
It would be awesome if there were a 200 grain Gold Dot or HST available as a component. For the time being, the XTP looks like a great bullet at 10mm speeds. I’d like to also test the Nosler 200 gr.
Pretty lousy performance…
Moral of the story–don’t drive bullets faster than they were designed to operate at.
Doc, what do you think of a round that meets minimum penetration requirements, has reasonable expansion, but also fragments? If I understand correctly, the main reason fragmentation is not desirable is because it reduces the projectile weight to the point that it doesn’t penetrate deeply enough. If it’s still making it past 12" even with jacket separation and/or fragmentation, would you consider it adequate for defense?
Like this:
Impact velocity with penetration depths:
1,259 fps, 14.1"
1,289 fps, 13.8"
1,270 fps, 14.2"
Retained weight and max/min expansion follow but I can’t tell you which bullet is associated with which shot.
155.5 gr, 0.703", 0.570"
153.1 gr, 0.760", 0.598"
153.8 gr, 0.726", 0.594"
Looks like a bullet that was pushed too fast for its design parameters or perhaps just poorly engineered. How does it work at 1000 fps?
I don’t know. That was a factory load. I was just asking on whether you would consider this type of failure to be acceptable when it consistently meets penetration requirements and has adequate expansion.
That would likely result in too much loss of weight in the primary recovered projectile to be considered a “good” result in most test parameters.
So like in the above test would you consider that too much weight lost? Or would that be an adequate result despite the fragmentation?
It depends on the parameters that are set by the testing agency, however, I personally would consider a 15% weight loss excessive for a duty handgun load in BG or 4 LD.
If you have the time, can you explain to me what the mechanics involved are? What makes weight loss a bad thing in and of itself?
Yeah I’m not understanding this either.
So if had kept its jacket, retained 90% of its weight, penetrated 14 inches and expanded 150% would you say it performed “lousy” as well?