Underwood Amoo 9x18 95gr JHP Test & Review [Archive] - Glock Talk

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plouffedaddy
09-17-2012, 07:35
http://i96.photobucket.com/albums/l178/tiffani33/Guns/IMG_1018.jpg

got some 9x18 Mak ammo from Underwood Ammo recently and put it through a little T&E and it seems to be pretty good stuff. It's loaded with the 95gr Hornady XTP bullet and the advertised velocity is 1150fps.


Before I go on, let's address the pressure issue. There were several Russian 9x18 rounds developed over the years of various weights and pressures, most ranged between 20,000 and 24,000 PSI. The Czechs designed a 69gr load in the early 1980s that traveled at 1350fps out of their CZ 82s that had a chamber pressure of 24,650 PSI. The ammo being reviewed today has a chamber pressure of 24,500 so it's actually slightly under what the Czechs used as their service round for the last few years that the gun was in service. After firing this ammo, I didn't see any evidence of stressed cases (bulges, cracks, ect...). As to whether other 9x18 guns can run this ammo as effectively and safely, I can't say for certain but most probably can since a few Russian factory loads approached the 24,000 PSI level and were used in a variety of countries/guns.


Moving on.... With 9x18 guns, people often debate whether one should use JHPs or FMJs for defensive purposes. With that in mind, the XTP bullet may be the ideal compromise. XTPs are known for relatively deep penetration due to relatively small expansion between 1.25-1.50x the original diameter once it meets soft tissue.


Here's a video with of me running some rounds through my CZ, a quick discussion of the rounds charachteristics, and a chronograph test comparing the Underwood load with the factory Hornady load:

http://youtu.be/ZZN31KHPADk


Chrono numbers:


Underwood 9x18 95gr XTP: 1198fps, 303 ft/lbs energy at the muzzle
Hornady 9x18 95gt XTP: 999fps, 210 ft/lbs energy at the muzzle


This round should be availible shortly on the Underwood site for those looking to pick some up. 

http://i96.photobucket.com/albums/l178/tiffani33/Guns/IMG_1017.jpg

Wishoot
09-17-2012, 15:42
Excellent!

Thank you for this review. I've been looking forward to the release if this ammo from Underwood and I'll pick up a few boxes with my next order.

4949shooter
09-17-2012, 17:19
I like that CZ!

I am not sure if they Maks are designed to handle ammunition this hot. The regular Hornady load is appreciably hotter than the military surplus stuff I have shot. This load is 200 fps faster than the Hornady.

plouffedaddy
09-18-2012, 07:49
Here's the chrono data for a few other loads out there through the same gun.

Silver Bear 94gr HP: 1108fps, 256ft/lbs of energy
Brown Bear 94gr FMJ: 1119fps, 261ft/lbs of energy

The Underwood's not too much hotter than that.

Here's the video evidence (lest someone come along and say I'm making it up... :whistling: )

http://youtu.be/PGYFwc02fEY


^^^Chrono around the 8:00 mark.

JW1178
09-18-2012, 09:44
My neighbor has that pistol. I'll be sure to pass the info on. I think that bullet would work well, a little expansion, just enough to give the front a flatter nose so it doesn't slip through and actually leaves a cavity, but enough penetration so it might require a surgeon instead of pliars to remove. Well, in Soviet Russia, a set of rusty needle nose would be used to remove bullets, but only to salvage the copper.

4949shooter
09-18-2012, 15:52
Good video, plouffe. Perhaps it isn't so hot after all. Looks like a nice load.

FFR Spyder GT
09-23-2012, 09:06
I have a Bulgy MAK and I have a bunch of the Silver Bear 120gr JHP ammo.

It rates up there with the Underwood at a little over 300ft/lbs with decent expansion and penetration.

9x18 and the Makarov is a good, but dated pistol and cartridge.

I have an extended and threaded barrel for mine because I was thinking about getting a suppressors but never did.

It was fun to shoot when I could buy ammo for $3.00/50.

plouffedaddy
09-23-2012, 12:05
$3/50 would be nice!

Still can't really complain though; sportsmans guide has it for $8/50 with free shipping currently. Tough to beat that these days.

SCmasterblaster
09-27-2012, 19:17
Good videos - good caliber.

RYT 2BER
09-28-2012, 18:42
Nice vid as usual.

Not a round that's in my world, but enjoyed the review.....

SCmasterblaster
09-29-2012, 08:49
Is this stuff a near twin to the .380 round?

4949shooter
09-29-2012, 10:44
Is this stuff a near twin to the .380 round?

It's a little more powerful.

.380 is 9x17. The Mak is 9x18.

SCmasterblaster
10-01-2012, 10:02
It's a little more powerful.

.380 is 9x17. The Mak is 9x18.

What a difference a little millimeter makes. :supergrin:

4949shooter
10-01-2012, 16:04
What a difference a little millimeter makes. :supergrin:

I see what you did there. :tbo: :supergrin:

SCmasterblaster
10-01-2012, 16:23
Here's the chrono data for a few other loads out there through the same gun.

Silver Bear 94gr HP: 1108fps, 256ft/lbs of energy
Brown Bear 94gr FMJ: 1119fps, 261ft/lbs of energy

The Underwood's not too much hotter than that.

Here's the video evidence (lest someone come along and say I'm making it up... :whistling: )

http://youtu.be/PGYFwc02fEY


^^^Chrono around the 8:00 mark.

Why was the video removed?

North Bender
10-17-2012, 22:27
I also would like to see the video and any data this poster developed!

But more than anything I'd like to know his sources for pressure data.

"The Czechs designed a 69gr load in the early 1980s that traveled at 1350fps out of their CZ 82s that had a chamber pressure of 24,650 PSI."

"The ammo being reviewed today has a chamber pressure of 24,500 so it's actually slightly under what the Czechs used ..."

Please! Sources!

SCmasterblaster
10-18-2012, 09:49
There are plenty of good loads in 9x19.