Underwood 9mm 124gr JHP in Vyse Ballistics Gel

[5pins]

Test Gun: Sig P229, P365
Barrel length: 3.9, 3 inches.
Ammunition: Underwood 9MM 124gr JHP (ITEM 114)
Test media: 10% Vyse Ballistics Gel
Distance: 10 feet.
Chronograph: Caldwell Ballistic Precision Chronograph G2.
Velocity average: N/A
BB Calibration: 3.75 inches.

https://general-cartridge.com/2022/0...allistics-gel/

[RevolverRob]

Thanks for testing these! The same bullet has been used in Black Hills and a few other brands. I always got the impression it was a mediocre performer (if that). Performance is underwhelming to say the least.

[diananike]

I bought 1000 of the hybrid hollow points when they were dirt cheap.
Figured they’d be good for loading SHTF ammo that could double as range fodder guilt free.
I loaded them soft at about 1070 fps as I wanted them to stay together and not fragment.
After seeing this test I’m tempted to load some hotter so they’ll at least make 12” even if they fragment.
8-9” is way too shallow in my book.
Even if it is a massive flower.

[5pins]

I bought 1000 of the hybrid hollow points when they were dirt cheap.
Figured they’d be good for loading SHTF ammo that could double as range fodder guilt free.
I loaded them soft at about 1070 fps as I wanted them to stay together and not fragment.
After seeing this test I’m tempted to load some hotter so they’ll at least make 12” even if they fragment.
8-9” is way too shallow in my book.
Even if it is a massive flower.

You could get more penetration but it's posable you may get more fragmentation and less penetration. No way of knowing without testing.

I wonder if this bullet would perform better in 147gr? Less velocity, less expansion, and more weight to help penetration.

[diananike]

It’s my understanding that all the weights use the same nose profile and skives
Obviously that makes the 115 even worse then the 124
Maybe the 147 would get a bit deeper with more a** behind it.
Also you could load it softer (925ish) and not sacrifice reliability.
I wonder if the nose design would still expand at low velocity.