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Underwood Ammo's Xtreme Penetrator

This is a discussion on Underwood Ammo's Xtreme Penetrator within the Hunting forums, part of the Firearm Forum category; I am looking at Underwood Ammo's Xtreme Penetrator, mainly in 9mm, 45auto and 10mm. I've heard that the ammo is not meant for self defense ...


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Old January 23rd, 2017, 06:44 PM   #1
 
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Underwood Ammo's Xtreme Penetrator

I am looking at Underwood Ammo's Xtreme Penetrator, mainly in 9mm, 45auto and 10mm. I've heard that the ammo is not meant for self defense due to the extreme penetration the round offers. Does anyone have any experience with this ammo?

I've seen videos on line and even the 9mm penetrates like nothing else. Goes through ballistic gel like it's nothing. I also saw a video where 22plinkster put a 10mm xtreme penetrator from a Glock 40 through a pretty darn thick piece of bulletproof glass, he pulls the bullet out of the hill behind the glass and it's not deformed at all, it's almost like nothing can stop these bullets. I would almost wager it might penetrate a grizzly skull.

here's the ammo
https://www.underwoodammo.com/10mm-a...me-penetrator/

and the video


Do you think an xtreme penetrator, in 9mm or 45auto, would make a good round for protection against black bear? brown bear?

Was thinking about loading up a Glock 20 with Underwood's 220gr hard cast, but after seeing these xtreme penetrators, I might carry them instead or alternate between xtreme penetrator and hard cast in the mag.

What are your opinions?



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Old February 14th, 2017, 10:33 AM   #2
 
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Just as with the Ruger ARX stuff, I wanna see some dead hogs on youtube before I swallow the hydraulically shocking ad copy.
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Old February 14th, 2017, 11:51 AM   #3
 
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I have shot the arx ammo but not the underwood.
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Old February 15th, 2017, 02:12 PM   #4
 
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Quote:
Originally Posted by 357mag View Post
I am looking at Underwood Ammo's Xtreme Penetrator, mainly in 9mm, 45auto and 10mm. I've heard that the ammo is not meant for self defense due to the extreme penetration the round offers. Does anyone have any experience with this ammo?

I've seen videos on line and even the 9mm penetrates like nothing else. Goes through ballistic gel like it's nothing. I also saw a video where 22plinkster put a 10mm xtreme penetrator from a Glock 40 through a pretty darn thick piece of bulletproof glass, he pulls the bullet out of the hill behind the glass and it's not deformed at all, it's almost like nothing can stop these bullets. I would almost wager it might penetrate a grizzly skull.

here's the ammo
https://www.underwoodammo.com/10mm-a...me-penetrator/

and the video


Do you think an xtreme penetrator, in 9mm or 45auto, would make a good round for protection against black bear? brown bear?

Was thinking about loading up a Glock 20 with Underwood's 220gr hard cast, but after seeing these xtreme penetrators, I might carry them instead or alternate between xtreme penetrator and hard cast in the mag.

What are your opinions?
I hunt black bear and big hogs. I typically don't use deep penetrating rounds because if you miss the skull (highly likely under duress), you just put a pencil sized hole in it's body and it keeps going. Grizz is much different than black bear, but for black bear and hogs defense, I use a good bonded hollow point in a large enough caliber to transfer some energy. I do carry the 10mm Underwood hard cast though, but I think their lack of expansion is a risk. The glock 20 is a sweet shooting and powerful pistol.
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Old February 16th, 2017, 01:20 AM   #5
 
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A while back, I read a post on another forum that discussed black bear protection. In it, the author says that a 44 Magnum 240 grain JHP is THE best for black bear. Here's a link to the post:

Model 29 Mountain - Topic

I believe this guy knows what he's talking about.

As far as brown bears, I think a long gun is more appropriate than a handgun but if a handgun is what you have, the biggest, toughest, largest bullet you can shoot with accuracy is what I'd choose.

Last edited by Tater; February 16th, 2017 at 02:08 AM.
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