Gelatin test: .30 carbine PPU 110 gr JSP & 10mm Norma 170 gr JHP

A

Andrew Wiggin

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.30 carbine PPU 110 gr JSP


.30 carbine fired from M1 carbine into calibrated gelatin.

BB: 556.9 fps, 3.7"

Average velocity: 1,955 fps
Penetration: 17.8"
Retained weight: 105.8 gr
Max expansion: 0.640"
Min expansion: 0.525"

I got an error on the impact velocity so I took a five shot average. Here are those figures:

1,975
1,936
1,904
2,025
1,933






10mm Norma 170 gr JHP



Original 10mm Norma 170 gr JHP fired from 4.25" S&W 1076 through four layers of denim into calibrated gelatin.

BB: 556.9 fps, 3.7"

Impact velocity: 1,219 fps
Penetration: 23.1"
Retained weight: 170.4 gr
No expansion
 
4LD is an IWBA and FBI protocol designed to simulate heavy clothing for testing handgun bullets. Older and poorly designed JHP bullets can tend to clog with heavy clothing. It is not a protocol for testing rifle bullets and JSP can't become clogged anyway.
 
That Norma 10mm bullet looks for all the world like a Nosler JHP. Seriously doubt that it is, and I have no idea if a Nosler JHP looked like that back in the 1980s, but there sure look exactly like that nowadays.
 
If you were comparing just those two bullets (which is an apples to dump trucks comparison) I think the 10mm would still penetrate more deeply. If it was a lighter (145 gr or so) 10mm bullet than I might agree. If it was heavy (220 gr or so) then I think the 10mm would definitely retain more energy and drive deeper at just about any distance.
 
Is there a question here? I'm not sure I understand a comparison of a rifle/carbine cartridge vs. a handgun round penetration. The M1 carbine was intended to replace a handgun because it offered easier use, higher accuracy, larger magazine capacity, greater hit probability and longer range than any handgun. For that purpose it did very well in WWII. As a personal defense weapon in a combat environment I would always choose an M1 carbine over a 10mm handgun.
 
I agree, Doc...and I would expect an FMJ 30 carbine round to penetrate things that a 10mm would only dent.
 
Nope. No question. The tests weren't intended as a comparison. Like I said above, that's comparing apples and dump trucks. They're just the two cartridges that I tested this week.
 
I'd love to test that but I don't know anyone who has one. From the look of that bullet, I'll bet it can still expand at a few hundred fps slower.
 
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