I was having a discussion with a friend about subsonic 300 blackout and I was of the opinion that it was basically the same as a 45ACP and I didn’t like any of the ammo that was on the market for self defense.
So I decided I hadn’t done a JCN Ballistic test in a while...
My criticism of the 194gr Maximum Expansion subsonic Underwood round was that it was only good for gel blocks and I wasn’t convinced it would be any good with hard barriers. I also thought it would essentially perform the same as a 45ACP.
So I brought out my 45ACP Kriss Vector and my SBR 300 blk AR to test.
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I set up a test wanting the 300 blk to fail. I put 3” of gel and then 2 pieces of 22ga steel at a 45 degree angle, then more gel.
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So I tested and...
![Image]()
![Image]()
The Underwood round fully expanded in 3” gel and punched through the steel. Then went an additional 9.5” in gel past that!
![Image]()
The 45 didn’t make it past the steel.
Hit the “like” button if you like these tests. It’s been a while since I’ve done any.
Other tests are here:
https://www.glocktalk.com/threads/jcn-ballistic-testing-compilation-master-thread.1713742/
So I decided I hadn’t done a JCN Ballistic test in a while...
My criticism of the 194gr Maximum Expansion subsonic Underwood round was that it was only good for gel blocks and I wasn’t convinced it would be any good with hard barriers. I also thought it would essentially perform the same as a 45ACP.
So I brought out my 45ACP Kriss Vector and my SBR 300 blk AR to test.
I set up a test wanting the 300 blk to fail. I put 3” of gel and then 2 pieces of 22ga steel at a 45 degree angle, then more gel.
So I tested and...
The Underwood round fully expanded in 3” gel and punched through the steel. Then went an additional 9.5” in gel past that!
The 45 didn’t make it past the steel.
Hit the “like” button if you like these tests. It’s been a while since I’ve done any.
Other tests are here:
https://www.glocktalk.com/threads/jcn-ballistic-testing-compilation-master-thread.1713742/
