Underwood Ammo 125gr Gold Dot 357 Sig Gel Test

[plouffedaddy]

Finished up the testing of the Underwood Ammo 125gr Gold Dot 357SIG round. Here are the conditions and results.

Test conditions:
-Glock 22 with a G31 barrel (20lb spring)
-Test rounds fired from 10 feet
-"FBI spec" (Their term, not mine...) Clear Ballistics gel block
-4 layers of denim

Results:
-1558 FPS, 673 FT/LBS Energy
-17'' of penetration
-Recovered weight: 124gr

Here's the video showing the test and a discussion of the results:

 

[ku4hx]

That's why I like this round. It really does as claimed: duplicates the 125 grain .357 Magnum in 4" barrel.

 

[Shawn Dodson]

FYI: What you describe in the video as the "permanent cavity" is actually the temporary cavity.

The radial cracks produced in the gelatin represents the length and diameter of the temporary cavity produced in soft tissues, not the permanent cavity.

 

[beatledog7]

Yeah, I'm lovin' me some 357 Sig!

 

[plouffedaddy]

FYI: What you describe in the video as the "permanent cavity" is actually the temporary cavity.

The radial cracks produced in the gelatin represents the length and diameter of the temporary cavity produced in soft tissues, not the permanent cavity.

Hmm... When I cut it apart the gel is not together where the 'permanent cavity' is. Also, when I play it in slow motion there is a much larger 'temporary cavity' than what is left when I walk up to it. Not trying to be a smart-*ss, just adding additional information...

 

[Snowdog]

Plouffedaddy, I greatly appreciate this test of Underwood ammunition. When hiking, it's what I carry in my M&P40c (with StormLake .357sig barrel). Just about everyone has heard of Double Tap and Buffalo Bore, but it seems at times that Underwood is still a sleeper.

More than once, I've had someone ask why I don't carry hotter DT or BB fodder for trail use. Each time, I explain that Underwood loads are about as hot as commercially available.
It's as if many folks believe Underwood is bargain basement newcomer who loads bottom-of-the-barrel components to standard pressure for plain vanilla results.

Starline brass, Gold Dot bullets... nothing bottom-of-the-barrel about it.
With 1500+ FPS from a G23 (TNoutdoors9) or 1550+ FPS from your G22, I'd say there's nothing plain vanilla about the performance either.

Again, thanks for the research and this thread to share your findings!

 

[Inebriated]

357 SIG is just impressive.

Just waiting on that Gen 4 33....

 

[Torian]

I love this bullet even more in the 158 grain. The .35 caliber 9mm Gold Dots (bonded) don't seem to perform quite as well in the same tests that TNToutdoors conducted.