SIGforum
Underwood 9mm +p+ Bonded Hollow Point Ammo

This topic can be found at:
https://sigforum.com/eve/forums/a/tpc/f/410601935/m/3130055624

June 30, 2017, 06:45 AM
wetwilly
Underwood 9mm +p+ Bonded Hollow Point Ammo
If anyone has tried it, what did you think of it?
June 30, 2017, 06:47 AM
wetwilly
quote:
Originally posted by wetwilly:
If anyone has tried it(124 grain), what did you think of it?

June 30, 2017, 12:22 PM
parabellum
This video is 5 years old but the information is likely still valid.



Looks like Underwood achieved their advertised velocity of 1300 fps. Righteous.

The 124 grain load is certainly a better choice than Underwood's 115 grain +P+ loading that uses the Speer Gold Dot.



Underwood promises 1400 fps from a 4" barrel. tnoutdoors clocked a 5 shot average of 1434 fps from a 4" barrel. Wow.

So, Para, why do you say the 124 grain offering is preferable?

One word: penetration

The extreme velocity of Underwood's 115 grain load means that it expands to an incredible degree (.880" in the video), but it penetrated to 9 inches only, as opposed to the much more desirable 13.25 inch penetration of the 124 grain load.

The accepted standard for self defense ammunition is 12 to 18 inches in ballistic gelatin. The 124 grain load fails within this window. The 115 grain load does not.


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June 30, 2017, 12:51 PM
wetwilly
Well Duh! I should have thought about YouTube.

Thank you!!
July 13, 2017, 08:54 PM
giz55792
I've tried the non bonded Nosler bullet version and it's not bad recoil wise and it's accurate.

I need to get some more one day, too bad he switched to only selling the 20 round boxes over the 50's.
July 25, 2017, 03:58 AM
Hansgruber
I chronographed it from my Sig P228 at just over 500 lb-ft of kinetic energy! It's a seriously potent SD load, and far superior to most of the crap being "marketeered" as SD ammo while producing 330 lb-ft of KE.
September 05, 2017, 06:04 AM
xcop
I tested the 124+p+ gold dot as well as the 115+p+ from Underwood. I used my Glock 19 for both. Fired from 10 feet into Clear Ballistics blocks covered by a layer of 14oz denim,a sweatshirt and a heavy t shirt I got the following.
124+p+ 15.0 inches expanded to .64x.46 for avg .55
115+p+ 12.5innches expanded to .696x.52 avg is .61

115+p+ was gold dot also
September 06, 2017, 10:08 AM
sns3guppy
quote:
Originally posted by Hansgruber:
I chronographed it from my Sig P228 at just over 500 lb-ft of kinetic energy! It's a seriously potent SD load, and far superior to most of the crap being "marketeered" as SD ammo while producing 330 lb-ft of KE.


Kinetic energy isn't the whole picture, and a round that doesn't penetrate (115 gn, as noted above) can hit hard, but still not have the terminal effect desired). Pushing +P+ to get that hit, or to push performance, isn't necessary, and falls outside of known or set standards for safety. There's no need.

If there's that much need to push pressure, why not go to a different cartridge?
September 09, 2017, 02:08 PM
BBMW
Do you have pictures? Also, you didn't want to try the 147gr? In the Tnoutdoors9 tests, that did spectacularly.

quote:
Originally posted by xcop:
I tested the 124+p+ gold dot as well as the 115+p+ from Underwood. I used my Glock 19 for both. Fired from 10 feet into Clear Ballistics blocks covered by a layer of 14oz denim,a sweatshirt and a heavy t shirt I got the following.
124+p+ 15.0 inches expanded to .64x.46 for avg .55
115+p+ 12.5innches expanded to .696x.52 avg is .61

115+p+ was gold dot also