Action noise

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jmz5
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Action noise

Post by jmz5 » 21 Aug 2011, 17:27

Other than holding the bolt closed on a ruger 22/45 or a MP15-22, anyone have any ideas on how to quiet them down? I have read on silencer talk that some people are adding weight to the back of the ruger mk bolts to keep the round in the chamber longer, I am going to to give it a try.

Anyone else suppress either of these 2 guns?

I am in the process of putting together a 10/22 host for my spectre.
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Esteves
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Re: Action noise

Post by Esteves » 21 Aug 2011, 17:57

I was looking at the magnetic widgets for the 10/22 a while ago.
http://www.tbasuppressors.com/products/1022-bolt-lock" onclick="window.open(this.href);return false;

I think there's at least one other out there that's similar.
TBA also has a lock for the Mk II, but it's a gunsmithing modification.
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Re: Action noise

Post by srt-4_jon » 21 Aug 2011, 18:55

Esteves wrote:I was looking at the magnetic widgets for the 10/22 a while ago.
http://www.tbasuppressors.com/products/1022-bolt-lock" onclick="window.open(this.href);return false;
You dont really need one. You can hold it shut with your hand or some paracord.

And for the op, the only things that will make them quieter will be making them single shots.

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Re: Action noise

Post by jmz5 » 22 Aug 2011, 04:31

srt-4_jon wrote:
Esteves wrote:I was looking at the magnetic widgets for the 10/22 a while ago.
http://www.tbasuppressors.com/products/1022-bolt-lock" onclick="window.open(this.href);return false;
You dont really need one. You can hold it shut with your hand or some paracord.

And for the op, the only things that will make them quieter will be making them single shots.
I'm not looking to completely mute them, just quiet them down as much as I can while still having them function.

For my tests on my 22/45. I am going to try taping some pinewood derby weights to the back of the bolt. For the 15-22, figure out a way to put in a buffer, maybe a slightly stronger spring.
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srt-4_jon
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Re: Action noise

Post by srt-4_jon » 22 Aug 2011, 05:28

But if you add more weight to the bolt, it should also slam harder and louder right?. Testing shows the bolt coming forward is within a few db's of actual suppressed firing.

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Re: Action noise

Post by jmz5 » 22 Aug 2011, 05:31

My theory is that the brass will stay in the chamber that millisecond longer and force more of the blast into the can instead of blowing out the ejection port.
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Re: Action noise

Post by jmz5 » 22 Aug 2011, 05:33

Might have to break down and buy a db meter for my tests. Maybe I can find a used one on ebay.
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Re: Action noise

Post by srt-4_jon » 22 Aug 2011, 06:14

jmz5 wrote:My theory is that the brass will stay in the chamber that millisecond longer and force more of the blast into the can instead of blowing out the ejection port.
I get that. What I am saying is that suppressed firing vs. the bolt slamming shut is very close already. By adding more weight, you will make the bolt slam harder and louder. I think it will end up being slightly quieter but not a noticeable difference.
And last time I checked, DB meters were a few thousand used. I do look forward to the testing if you do get a meter though. I dont think anyone has done that before.

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Re: Action noise

Post by jmz5 » 22 Aug 2011, 06:32

srt-4_jon wrote:
jmz5 wrote:My theory is that the brass will stay in the chamber that millisecond longer and force more of the blast into the can instead of blowing out the ejection port.
I get that. What I am saying is that suppressed firing vs. the bolt slamming shut is very close already. By adding more weight, you will make the bolt slam harder and louder. I think it will end up being slightly quieter but not a noticeable difference.
That is also a possibility, I searched the internets long and far, and there hasn't been much going on with it, so I am going to give it a try. Just for shits and giggles.
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Re: Action noise

Post by Esteves » 22 Aug 2011, 06:32

Good luck on the sound gear. The ones that should be used for firearms sound testing are horrendously expensive and pretty uncommon. The inexpensive ones don't have the response time to accurately measure short impulse noises like gunshots.

.22 short will be quieter than .22 LR, especially with a can. The magazine will need modification to feed reliably. It may auto-feed with only a modified spring, or you may need to find a lighter bolt/conversion (which are hard to find.)
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Re: Action noise

Post by jmz5 » 22 Aug 2011, 15:05

I've got plenty of RWS, and other match .22lr subsonic ammo. I've had great luck with CCI standards in the blue brick. Love wolf, RWS and lapua .22lr It's pricey though.

Scratch the db meter, just going to use my ears.
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Re: Action noise

Post by jmz5 » 22 Aug 2011, 17:41

Wolf is very quiet, gonna test i tand others out of the spectre tomorrow. Going to get another 10/22 tomorrow morning. I got a tac sol barrel, some extra parts from previouse builds and a scope. I took a stock trigger pack and after ruining a hammer, I finally got the trigger group smooth as glass with just the ever so slight tiny tiny bit of creep. First time altering stock trigger components instead of buying aftermarket, so it was expected.
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Re: Action noise

Post by Mister Freeze » 22 Aug 2011, 19:51

An old army buddy suppressed his 10/22. The action is as loud as the report. I think it was a Spectre can, and no other mods.

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Re: Action noise

Post by srt-4_jon » 23 Aug 2011, 03:35

Besides holding the bolt shut, best thing you can do is put in a poly buffer

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Re: Action noise

Post by jmz5 » 23 Aug 2011, 04:52

I've got plenty of experience with the guts if the 10/22. I could probably assemble one right on the assembly line blindfolded by now. This will be my 4th one.
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Re: Action noise

Post by jmz5 » 23 Aug 2011, 16:57

I didn't get to the mods I wanted to try today, but I did get my 10/22 together and it is noticeably more quiet than the 15-22.
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Re: Action noise

Post by RC57 » 30 Aug 2011, 18:44

I have an SR-22 with a TacSol barrel and poly buffer that I use a YHM Wraith suppressor on. The poly buffer was a very cheap modification that definitely helped make the action quiter.

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