"Is 5.7x28mm an Effective Self-Defense Round?" Topic

"It might be premature to say that FN Herstal's 5.7x28mm cartridge ("5.7") is experiencing a renaissance, but the cartridge has done something that most proprietary-ish, specialized calibers don't do: Bask in increased popularity decades after its introduction.

Now, in addition to the Five-seveN pistol and the P90, a number of manufacturers have already committed to the 5.7 in the form of AR conversion kits and AR-based sub-gun builds. Most notably and more recently, however, Ruger introduced the Ruger-57, a reasonably priced but comparable pistol to FN's thousand-dollar Five-seveN handgun…"
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Amicalement
Armand

I don't remember who said it, but I re/was told "Never get in a gunfight without a gun that starts with .4 or ends in magnum", while the 5.7 is fast it is a very light round.

(smile)

Amicalement
Armand

Designed to defeat body armor, in CQB it will do the job if the operator knows they are doing.

Hey, it worked great for the USAF heroes in Stargate, didn't it?

Dude…! (smile)

Amicalement
Armand

What kind of body armour is a DAMAGE REDUCTION round supposed to defeat? Padded bras?

YouTube link

Apparently the answer is L2 soft armour. Although it's not really about penetration there; if the 9mm is stopped its energy will still go somewhere, which will just as well impair the target.

https://youtu.be/zRaCmUTS2t8