9x18mm gel test: Hornady 95 gr XTP

A

Andrew Wiggin

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Link to video of test

Hornady 95 gr XTP fired from Bulgarian Arsenal Makarov into calibrated 10% gelatin with and without denim.

BB: 590.8 fps, 3.0"

Bare gel results:

Impact velocity: 1,027 fps
Penetration: 6.9"
Retained weight: 93.2 gr
Max expansion: 0.657"
Min expansion: 0.494"

4 layers of denim results:

Impact velocity: 1,077 fps
Penetration: 12.9"
Retained weight: 95.3 gr
Max expansion: 0.534"
Min expansion: 0.400"


Unfortunately, the card in one of my cameras became corrupted, causing me to lose the HD side view footage and the photos that I took before weighing and measuring the projectiles. Thankfully, I hadn't already melted the blocks when I discovered the problem so I retook the photos without the bullets present in the block. Sorry for that.

The final portion was supposed to be much closer so you could more clearly view feeding and ejection. Next time I'll position the camera much closer and set the frame rate to 120 frames per second instead of 240 for better resolution. Hey, I'm still learning.
 
Mr. Wiggin,
I was going to ask if you had reversed your results, but I also watched your video about the silver bear jhp ammo and you had the same counter-intuitive results.
Why would denim allow greater penetration? Does it keep the hollow point from expanding?
weird. Thanks for posting.
 
I may have to use some different ammo in my cz82. I guess along as they are wearing clothes it works ok. If no clothes not very good.:eek:
 
Nope. Not a typo.

Doofus47, you nailed it. Denim often clogs a hollow point causing less and/or delayed expansion. Older JHP designs would sometimes not open at all, especially at low velocity. Less expansion or slower expansion means the bullet has less drag, allowing it to penetrate more deeply.

XTPs have a reputation of very modest expansion, which I was hoping would allow for adequate penetration but that wasn't the case.


Thanks for your support, guys.
 
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