Interesting Article about the .22WMR and the 5.7x28mm

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Hebs
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Interesting Article about the .22WMR and the 5.7x28mm

Post by Hebs » 26 Feb 2010, 07:58

I know it's a couple years old... but I still thought it was an interesting read. Especially the part about the SS197 only having a Muzzle Velocity of 1560 fps and ME of 216 ft when fired out of the FiveseveN.


http://www.chuckhawks.com/5-7x28_cop_killer.htm" onclick="window.open(this.href);return false;

Augustus
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Re: Interesting Article about the .22WMR and the 5.7x28mm

Post by Augustus » 26 Feb 2010, 09:03

Its just more people who think that barrel length has no effect on muzzle velocity.
Its just more people who are afraid of cartridge advancement.
Its just more people who subscribe to the big bullet theory.
Its just more people who will do anything to convince themselves that the new technology is inferior to the old, so that they won't have to buy new things.

They compare full rifle length .22WMR velocities to pistol 5.7 velocities.

What we should do - Take Elite PS90 muzzle readings for the PenetraTOR 55gr FMJ, then go take muzzle velocities of 5.56/.223 55gr fired from a 4.9 inch pistol barrel.
What would happen?
2300FPS from 5.7 with a 55gr.
The .223 would get probably about 2000 FPS. Its hard to find data for .223 ballistics on barrels shorter that 14.5 inches, let alone 10.
Then, following the same test procedure as them, we reveal that 5.56 is actually less powerful than 5.7x28.
At this point, they attack us for using such a short barrel with the 5.56.
We kindly point out that they did the same thing, and that in effect, they've just attacked their own testing.

Well I'll leave this here.
Kel-Tec PMR-30 .22WMR pistol
Average 40gr velocity with stock barrel : 1250~ FPS.
Source : Kel-Tec Owners Group forum, posted by a Kel-Tec rep.

Five-seveN 5.7x28
Elite 40gr ProtecTOR : 2092 FPS.
Souce : Elite Ammunition




Here I am, preaching to the choir! :wall:
Oh well, I'm sure a lot of you could use this info in future debates.

VITALIY
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Re: Interesting Article about the .22WMR and the 5.7x28mm

Post by VITALIY » 26 Feb 2010, 09:23

Never cared mutch for what others think, alll they have is opinion's, and ya all know what they say about assholes and opinions: everyone has got them , and they all stink :lmao:
Dont meen in disrespectful way to the original poster :) you know, just my fillings towards the subject of the debate, that i've acumulated over the years listning to the same bull :D

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Cyberfly
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Re: Interesting Article about the .22WMR and the 5.7x28mm

Post by Cyberfly » 26 Feb 2010, 09:27

Remember what Jesus said...'Love the Haters.'
No wait...maybe it was 2Pac...'Don't hate the Player'?
Wait...maybe it somebody else that simply said, 'Player Hater'?
:?:
Phouqit. I can't remember. Daggummit. I hate gettin' old. :wall:
Never confuse 'The will of the Majority' with 'The will of God'.
**This post created with 100% recycled photons!**

VITALIY
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Re: Interesting Article about the .22WMR and the 5.7x28mm

Post by VITALIY » 26 Feb 2010, 09:50

Yep makes 2 of us, we ither getting to old for this sht or this sht is getting old :)
Ither way, time to go to EA range and shoot some of them underpowered 5.7 rounds, and watch them bounce off the soda can :lmao:
Fly you think if i listn a 2pac's song "we hit em up" at full blast for 32 times in the row, i might be forgiven :laugh:

Buffman
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Re: Interesting Article about the .22WMR and the 5.7x28mm

Post by Buffman » 26 Feb 2010, 09:50

someone tried to use that article recently citing those figures. We all know standard ss197SR form the FSN can usually go as high as 1750ish FPS. That is only a mere 9-10% loss from a 10" barrel, not the 20% the assumer assumers. His article should be taken down for such assumptions

Hebs
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Re: Interesting Article about the .22WMR and the 5.7x28mm

Post by Hebs » 26 Feb 2010, 10:03

Agustus,

The keltec 223 pistol is a good place to start with measuring those short barrel stats that you wanted...

Technical Specifications
Caliber: .223 rem 5.56mm NATO
Weight unloaded (no magazine): 51 oz 1450 g
Length: 18.5" 470 mm
Barrel length: 9.2" 234 mm
Sight radius: 12.5" 318 mm
Muzzle velocity (M193) 2600 fps 800 m/s <--- 2600 fps out of the 9.2" barrel is impressive.

btw, my friend has this keltec pistol, and its fun to shoot. even one handed. :)


I think the guy that wrote the article has his math messed up a bit. The guy that wrote this article here
http://www.gunblast.com/FN-FiveseveN.htm" onclick="window.open(this.href);return false; actually chrono'd the rounds 10' out from the muzzle. I would be more willing to believe him.

I just thought it was interesting that the guy that wrote the story in my original post seems to think the 5.7 is pretty much a .22 WMR with a pointy tip! :)

Augustus
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Re: Interesting Article about the .22WMR and the 5.7x28mm

Post by Augustus » 26 Feb 2010, 10:07

Indeed, people that think 5.7 is a .22WMR pistol are very very hopelessly misinformed.

ryker
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Re: Interesting Article about the .22WMR and the 5.7x28mm

Post by ryker » 26 Feb 2010, 10:53

A 22wmr RIFLE is a highly effective weapon at under 100 yards. So trying to dismiss the fiveseven PISTOL by comparing it to a rifle. Do they not see that this is a compliment to the caliber. A pocket Sized RIFLE.

Secondly. Compare that data of the m4 carbine at 300 yards (effective range) to the fiveseven pistol at it's effective ranges. In some loads the fiveseven is superior.

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