5.7x28mm

Challenge ACCEPTED!

It will destroy the buffer and snap the takedown pin. Probably in less than 1 magazine.

I tried to make it work a few different ways, but the added mass - even as little as our 2.5 ounce Salamander - screws with the hybrid blowback system and massively increases slide velocity. The floating barrel is designed to act as a psuedo short recoil system using the friction of the expanded case against the chamber walls. The grip is not enough with a can on the end, so they become simple blowback with a way-too-light slide.
 
I posted these photos on THR a few years ago. The big hole in the center is a .50 BMG at 100 Yards. The three at the bottom left are FN SS 198 5.7 x 28 rounds fired through my FN Five Seven at 30 feet. The Granger Catalog is 3" to 4" thick. I believe the 5.7 penetration is more than adequate.







A 9mm will do that and then some. Tests performed on 9mm ammo in home construction penetration tests and the different 9mm loads would penetrate 9-12” of pine boards, or 10-12” of gypsum.

I bring this up not to tout 9mm but to just make sure you are not misappropriating the fact that the 5.7x28 can make it through 3-4” of catalog.
 
A 9mm will do that and then some. Tests performed on 9mm ammo in home construction penetration tests and the different 9mm loads would penetrate 9-12” of pine boards, or 10-12” of gypsum.

I bring this up not to tout 9mm but to just make sure you are not misappropriating the fact that the 5.7x28 can make it through 3-4” of catalog.
"Misappropriating the fact that the 5.7x28 can make it through 3-4" catalog?" Are you insinuating that I have posted a photo that is a dishonest depiction or fake?
 
"Misappropriating the fact that the 5.7x28 can make it through 3-4" catalog?" Are you insinuating that I have posted a photo that is a dishonest depiction or fake?

Sorry, should have said something to the effect that your post implies that 5.7 is doing something that other handgun rounds won't do. That is all. Wrong choice of word.

I was just posting my thoughts that there are plenty of handgun rounds that will perform like that. That is all.
 
"Misappropriating the fact that the 5.7x28 can make it through 3-4" catalog?" Are you insinuating that I have posted a photo that is a dishonest depiction or fake?

I was present for these shenanigans. I can vouch for the right amount of money.. :)
 
I was present for these shenanigans. I can vouch for the right amount of money.. :)
Glad you chimed in. Was going to give you a holler if things went south.

That meet was 5 years ago this past December. If you want whenever you come this way again give me a holler and we can grab a beer and some Q or whatever on me.
 
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