5.7 suppression

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panzermk2
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Re: 5.7 suppression

Post by panzermk2 » 29 Sep 2015, 13:07

YES, in fact it's the number one I recommend. Almost ALL of our testing is done with one.
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DoubleJ
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Re: 5.7 suppression

Post by DoubleJ » 29 Sep 2015, 17:43

I'll put my Axiom up against the Gemtech in any category.

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Re: 5.7 suppression

Post by panzermk2 » 29 Sep 2015, 20:15

DoubleJ wrote:I'll put my Axiom up against the Gemtech in any category.
Gemtech is lighter and balances better. I know only by an ounce but that adds up at the end of the barrel.

Have you done a side buy side test using the exact same gun and ammo?
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galexander
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Re: 5.7 suppression

Post by galexander » 30 Sep 2015, 16:39

The Gemtech seems to be unavailable right now. One dealer told me Gemtech had a problem with one of their production machines and another told me Gemtech was making changes and that the can would likely to cost more when it was available again in 3 or 4 months. I find it irritating that Gemtech (and to a lesser extent their distributors) make no mention of this on their website. It is like all is well until a day or so after you try to order one. Have folks here had reliability issues with the Spectre or Axiom? I am not interested in subsonic shooting only in not having my ears bleed if I ever use it for home defense.

**I was misinformed. It is available but short supply. Gemtech told me they only do one manufacturing run for it each year. It sure is more expensive than the 5.7 rated rimfire cans but I ordered one anyway.
Last edited by galexander on 10 Oct 2015, 12:34, edited 1 time in total.

DoubleJ
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Re: 5.7 suppression

Post by DoubleJ » 30 Sep 2015, 17:39

No trouble with my Axiom/FsN combo that isn't there when the can is off. Hoping it's just a break in issue with the new threaded barrel.

If anyone has the Gemtech around Denver, I'm up for a showdown. After that we'll put them both on my 22/45 and see how that goes.

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Re: 5.7 suppression

Post by Rapier1772 » 16 May 2016, 11:22

Anyone have more info on the EliteIron Echo suppressors?I did a search on here but only found one reference to it, I was hoping for more input. They're made of steel instead of aluminum so they're heavier than Gemtechs (~2x) , they're also smaller in physical size. Does anyone know for certain if they are they as quiet or close to Gemtechs?
Gem-Tech's & Elite Iron's website do cite dB reduction ratings
GT: 32 dB
EI: 33/37 dB (high velocity/subsonic)
So it would seem they're a little better :ponder:

Other things to ponder:
EI can also be disassembled, GT cannot.
GT can be used on both FsN & PS90, EI cannot.
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Re: 5.7 suppression

Post by Toynut » 04 Jan 2018, 19:53

I realize that I am jumping in to this thread a year and a half late, but I have a question based on my recent experience with my SBR’d PS90. I installed a couple of different SilencerCo suppressors on my rifle and found one that balanced suppression with size and handling qualities. I went to the range with standard velocity ammo and started to have failure to feed issues about 35-40 rounds into the magazines. It would not fully chamber and required me to cycle the bolt to fire 3-5 shots without a hang up. The rifle shot decent groups throughout the 100-150 total rounds I shot in the session. I field stripped the rifle when I returned to my gun room and was absolutely amazed at the amount of crud ( mostly soot) and carbon in the gun, as well as the magazines ( mostly around the rollers and feed lips). The PS90 is normally a squeaky clean (relatively) shooter that requires barely a wipe and quick bore clean between sessions. I had loose carbon falling out of the chamber and soot all the way back to the hammer pack. I have over a dozen and a half suppressors of various makes and models and caliber sizes and have rarely seen this kind of fouling in a firearm before (my sbr’d suppressed Sig MPX also ran pretty dirty). I am curious if others are experiencing this level of contamination in their rifles. Is there one particular suppressor or ammunition combo that seems to be the ticket to reduce fouling more than others?

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Re: 5.7 suppression

Post by panzermk2 » 05 Jan 2018, 09:15

You are getting blowback.
The case is being ejected to soon.
What ammo where you using?
Try it with some Sub Sonic ammo for the P90/SBR PS90. FYI the P90/PS90 will get dirtier when firing through a can.
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Re: 5.7 suppression

Post by Toynut » 03 Feb 2018, 04:35

Finally able to log back in to reply.
I was shooting factory 197s.
I was wondering if changing the springs to your heavy duty versions would do the trick, as I know no other way, short of loading tuning specifically for suppressor applications that would improve the situation? Another thought would be to consider a larger suppressor body such as a full size 5.56 version or a 30 caliber can in a worst case scenario to reduce the back pressure ( at a trade off of some noise suppression).

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Re: 5.7 suppression

Post by panzermk2 » 05 Feb 2018, 12:08

Some 5.56 create issues because the initial chamber/baffle is to big. The large baffle keeps the chamber pressure HI so that when the case is extracted pressure is to hi and you get jamming and mag popping.


In about 4 weeks we will have back in stock our HD rate reducer.
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Re: 5.7 suppression

Post by grimmond » 06 Feb 2018, 13:18

panzermk2 wrote:
05 Feb 2018, 12:08
Some 5.56 create issues because the initial chamber/baffle is to big. The large baffle keeps the chamber pressure HI so that when the case is extracted pressure is to hi and you get jamming and mag popping
As Trump says, "fake news". You need to go back to the book on silencer design and technology. For starters the only way your explanation could even come close to the truth would be if he was using a suppressor with a small initial chamber which would create high amounts of back pressure. Even then his ps90 should be cycling faster not slower. Also it would not be failing to fully eject and cycle the next round. A 5.56 rated suppressor is designed to handle the extremely large and longer pressure of 5.56.. A 5.7 does not come close to that and it would create less pressure not more which in turn could have caused his lack of full cycling issues. Adding your rate reducer would help with keeping the bolt closed longer and reduce the amount of blow back but then he would have to manually cycle each round depending on the suppressors initial blast chamber size.
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panzermk2
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Re: 5.7 suppression

Post by panzermk2 » 06 Feb 2018, 14:56

I mean to small, see this post.

viewtopic.php?f=17&t=8215


Cans that don't work
Knight M4 5.56 it may work great with M249 Machine guns and M4 but it's first set of baffles is to small causing a pressure spike with SS ammo popping the magazine out.
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panzermk2
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Re: 5.7 suppression

Post by panzermk2 » 06 Feb 2018, 14:57

Ether way the 5.7 has a pressure curve can cause issues even with a larger baffles.
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danbrew
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Re: 5.7 suppression

Post by danbrew » 09 Aug 2018, 20:57

I know this is an old thread... but it needs an update. Can you shoot just any old can on any old gun? Shoot a 5.7 through a 9mm can? The bullets are smaller in diameter, right? Ahhhh... not so fast. What about pressure? You risk blowing up your can/gun/face if you mismatch cans and cartridges.

I'd never ever shoot a can designed for one round with another unless the manufacturer of the can says that your can is rated for the round.

fwiw.

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Re: 5.7 suppression

Post by Buffman » 11 Aug 2018, 18:27

^ Yep :D

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