hey they have once fired brass at this sit i ran into I have no idea what it is new but here you go http://shop.topgunss.com/57x28-Brass...57x28-1000.htm
Happened to come across 5.7x28 load data today.
Have a friend that picked up an AR-57 upper a while back and talks about how accurate & easy it is to shoot.
I had never really looked at the round before.
Both the 5.7x28 and the .223 use .224 bullets, and there is data for both using the 40-gr Hornady V-Max bullet (which is the 5.7 factory round, SS197SR).
Looking at the reloading data for the .223 - the 40-gr V-Max can be pushed to 3,737 fps.
In the 5.7, the same 40-gr V-Max can only be pushed to 1,875 fps.
So, other than being able to carry an extra 20 rounds per magazine - is there something that makes the 5.7 a better round in the carbine platform?
Think I want to load up some for my 20" heavy target barrel AR and see what it can do.
Also want to see what the load will do out of a 12VLP.
Both barrels have 1:9 twist.
Anybody got any trigger time with this bullet in .223?
Rick_W
CPO-USN(Ret)
You don't know what you don't know.
hey they have once fired brass at this sit i ran into I have no idea what it is new but here you go http://shop.topgunss.com/57x28-Brass...57x28-1000.htm
1875 FPS is typically the speed listed when fired from the FN Five-seveN pistol. It should be around 2400 fps or so from a rifle. It won't ever run with a .223 Rem, so no advantge in a carbine as far as ballistic performance. It is really good at what it was designed to do though, provided interchangeble ammo between rifle and handgun for LE/Military. The handgun fully loaded (20 + 1 rounds) is extremely light (think empty Glock 22 weight).
Next time I have my Five-seveN out I will try to chrono it. It is what stays loaded in the GunVault in the night stand. My wife loves the light weight and very low recoil.
More shooting, less typing.
Yeah, I can see the advantage of interchangeablitity (if that's a word) for carrying both rifle & pistol with same round - think back to the cowboys with .44WCF.
And there's no question the 5.7 is an effective round.
I do like the fact that the Five-seveN holds 20 rounds, and with minimal recoil.
Was not familiar with the round and after doing some research I can't see myself buying either a carbine or AR-57 upper.
Wouldn't mind having the Five-seveN, but finding factory ammo in my local areas is a PITA.
Rick_W
CPO-USN(Ret)
You don't know what you don't know.
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