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Discussion Starter · #6 ·
Well that is not surprising for level II, right? I would expect it to go through that no problem
Correct, I wasn't surprised at all. The IIIA did surprise me. I did this in response to a video where IRV8888 talked about PDW's and his co host stated no commercial 5.7 ammo penetrated soft armor (didn't specify FSN or PS90) :)
 

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Correct, I wasn't surprised at all. The IIIA did surprise me. I did this in response to a video where IRV8888 talked about PDW's and his co host stated no commercial 5.7 ammo penetrated soft armor (didn't specify FSN or PS90) :)
Gotcha, I was trying to figure out why it was considered "armor piercing". Did it stop it out of the FsN?
 

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Remember that the SS190 "Armor Piercing" has a penetrating core and is designed to go through the titanium plate armor that the Russians wore (wear?) at the time
 

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Remember that the SS190 "Armor Piercing" has a penetrating core and is designed to go through the titanium plate armor that the Russians wore (wear?) at the time
I know for a fact that SS190, fired from a P90 will punch right through .125 thick 6AL4V titanium at 50 yards.
 

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The SS190 round has a steel penetrating tip and an aluminum core. My bad. I remembered it incorrectly.

SS190 duty The SS190 FMJ, a refinement of the SS90, was introduced in 1993.[SUP][6][/SUP] It offered superior performance over the prototype projectile as well as slightly reduced length.[SUP][6][/SUP] The latter change allowed it to be used more conveniently in the Five-seven pistol also being developed at that time.[SUP][9][/SUP] Fired from the P90, the SS190 propels a 2.0-g (31 grain) bullet at a muzzle velocity of roughly 715 m/s (2,350 ft/s). It has a steel penetrator and an aluminum core.[SUP][40][/SUP] The SS190 has been manufactured with a plain, black, or black-on-white tip color.[SUP][15][/SUP][SUP][41][/SUP][SUP][42][/SUP] It is classified by the ATF as armor-piercing (AP) ammunition, and its sale is currently restricted by FN to military and law enforcement customers.[SUP][15][/SUP][SUP][24][/SUP] In testing done by Houston Police Department SWAT, the SS190 fired from the P90 into bare ballistic gelatin exhibited penetration depths ranging from 28 to 34 cm (11 to 13.5 in).[SUP][21][/SUP] In testing in 1999 by the Royal Canadian Mounted Police (RCMP), the SS190 fired from the P90 at a distance of 25 m (27 yd) exhibited an average penetration depth of 25 cm (9.85 in) in ballistic gelatin after passing through a Level II kevlar vest.[SUP][38][/SUP]
 
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Trust me... losing those 6" doesn't effect the 5.7x28mm ability to penetrate Level II and Level IIIA soft armor.

Check out this video. At about the 10:00 mark he breaks out the SBR'd PS90 and shows what the difference between a 4" barrel and a 10" barrel does to Level II kevlar. Remember the 5.7x28mm round was developed for the 10.4" barrel all along. The extra 6" to make it non-NFA might add a little velocity, which never hurts... but you aren't losing anything by going SBR. :)

 
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Like I have said, " Buffman " has some of the best data on this round available.
 
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Discussion Starter · #16 ·
Trust me... losing those 6" doesn't effect the 5.7x28mm ability to penetrate Level II and Level IIIA soft armor.

Check out this video. At about the 10:00 mark he breaks out the SBR'd PS90 and shows what the difference between a 4" barrel and a 10" barrel does to Level II kevlar. Remember the 5.7x28mm round was developed for the 10.4" barrel all along. The extra 6" to make it non-NFA might add a little velocity, which never hurts... but you aren't losing anything by going SBR. :)

I'm still not sure if he was using II, IIIA, or IIA. he claims it to be IIA, but AE TMJ from the pistol should have went through that.
 

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Like I have said, " Buffman " has some of the best data on this round available.
I am brand new to this forum and also to the 5.7mm shell and the P/PS 90 SMG/carbine.

Does Buffman's data have the muzzle velocity of this round fired from the 10in SBR/SMG barrel and also the muzzle velocity of this round fired from the 16in carbine barrel?

I would love to see his ballistics data but I do not even know what key words to use in the forum search engine.
 

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Discussion Starter · #20 ·
:? The 197sr (1950 fs 340 ft lbs) is similar to the 30 carbine (1990 fs 967 ft lbs). the 30 carbine will penetrate level 3a out of a pistol while the 197sr wont. I guess the 30 carbine is a "cop killer" round. :evil:
By anti-gun logic yes, it's a super death ray, super cop killer..
 
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