[Shatter17]

Hi everyone, I'd like some ideas for suppressors that would work well on the XCR in 7.62x39. I know Surefire, Advanced Armament Corp & Gemtech are top names in the biz. Can anyone give more details like model names they know have performed well. A friend told me a 7.62mm(.308) suppressor can be used on a rifle that shoots the 7.62x 39 round? Is this true...?

 

[ExParatrooper]

Hi everyone, I'd like some ideas for suppressors that would work well on the XCR in 7.62x39. I know Surefire, Advanced Armament Corp & Gemtech are top names in the biz. Can anyone give more details like model names they know have performed well. A friend told me a 7.62mm(.308) suppressor can be used on a rifle that shoots the 7.62x 39 round? Is this true...?

Nearly all the .308 cans out there should work, given proper mount/threading, and concentricity to bore. .308 is standard NATO 7.62x51mm (except the latter has a higher chamber pressure due to the powder used). It is common for people to use .308 cans to suppress most .30 cal firearms.

Alot of .308 setups are not hearing safe. Some are right on the edge.

AAC http://www.advancedarmament.com/762_silencers.asp

Gemtech http://www.gem-tech.com/HVT.html

SWR http://www.swrmfg.com/ProductDetails.asp?ID=15
- http://www.swrmfg.com/ProductDetails.asp?ID=23

SureFire http://www.surefire.com/maxexp/main/co_disp/displ/carfnbr/440/sesent/00

AWC http://www.awcsystech.com/thundertrap.html

YHM http://www.yhm.net/store/phantom762.html

HTG http://www.htgsilencers.com/hrgsilencers.com/RIFLES.html


Keep in mind that, generally, the larger the baffle and endcape I.D./port size is from the actual caliber, the louder the can will be. There are some designs that minimize this, but they are few and far in-between. For example, a can made specifically for .338 Lapua will not suppress .308/7.62x51mm as well as a can made specifically for .308.

Also, can volume has a huge effect on suppression. Some people opt to go with thinner, lighter, and shorter cans due to weight. These will generally not suppress as well a longer can with larger O.D. This is especially true with .308 cans due to the already large size to handle this round - so I include this little tidbit here for you to consider.

Most .308 cans are right on the edge of "hearing safe" when running standard velocity rounds. Some are a bit louder on some hosts. Just try suppressing an M14/M1A and you will see what I mean.

 

[aziator]

I heard the AAC 7.62 can on a Remington Model 700...it was dang quiet. I would venture to say it was almost as quiet as the AAC 5.56 can (M2000 mod 07) that we were shooting. I was so impressed that I plan on ordering one for my Model 700.

On Edit:

It was definitely ear safe.

 

[ExParatrooper]

I heard the AAC 7.62 can on a Remington Model 700...it was dang quiet. I would venture to say it was almost as quiet as the AAC 5.56 can (M2000 mod 07) that we were shooting. I was so impressed that I plan on ordering one for my Model 700.

On Edit:

It was definitely ear safe.

True, but bolt rifles are always quieter than SA's suppressed. Suppressing a 7.62 semi is a different animal. You are right, though. The AAC 7.62 is very fun on a Rem700. I have shot Mark's (PSI, Inc.) many times. It does a good job of suppressing it and has an added bonus of dampening the recoil quite a bit.

 

[SigsRule]

I've got a SWR Omega 30 doing duty on my FAL at the moment. Now if my 7.62x39 kit ordered back in January would ever get here, I'll be trying the Omega on it.

 

[aziator]

I heard the AAC 7.62 can on a Remington Model 700...it was dang quiet. I would venture to say it was almost as quiet as the AAC 5.56 can (M2000 mod 07) that we were shooting. I was so impressed that I plan on ordering one for my Model 700.

On Edit:

It was definitely ear safe.

True, but bolt rifles are always quieter than SA's suppressed. Suppressing a 7.62 semi is a different animal. You are right, though. The AAC 7.62 is very fun on a Rem700. I have shot Mark's (PSI, Inc.) many times. It does a good job of suppressing it and has an added bonus of dampening the recoil quite a bit.

Yep, that is the same rifle that I heard. I know it is easier to quiet a bolt gun but I was impressed all the same.

 

[MickeyC]

Remember too that .308 cans are made for .308 bullets but 7.62x39 is actually a .311 bullet. Make sure the manufacturer doesn't make the opening too tight for the larger bullet.

 

[DSM]

IIRC AAC can bore out their M4-2000 to handle the 7.62x39. I'd think that would be better in that you wouldn't have to run a smaller rifle with the larger .30 cal cans.

 

[EricCartmann]

Remember too that .308 cans are made for .308 bullets but 7.62x39 is actually a .311 bullet. Make sure the manufacturer doesn't make the opening too tight for the larger bullet.

thanks for that tidbit mickey. i was looking at an AAC-762-SD to pull quadruple duty on 2 of my AR-10's, one FAL, an the 762x39 XCR. I emailed AAC if their 762-SD can will work with 762x39, i'll let everyone know once i get a response. they are really busy now and probably ignoring all FAQ emails. So I will call them again sometime next week.

 

[SigsRule]

Would you say it is adequate if you can insert a 7.62 bullet loosely in the end of the can with about the same clearance as a .308 round?

 

[DSM]

SigsRule-

Probably would work but for something like that it'd be better to get the blessing of the manufacturer first. And, don't forget, centrifugal force makes that bullet bulge as soon as it leaves the pipe. It is cranking out about eleventy billion rpm's afterall!

 

[Geseppe]

I HAVE a aac 762 sd and it is awesome. Much lighter than the phantom ones, the exact name escapes me, but you know what I am talking about. It is a quality made machine.

 

[Geseppe]

 

[crusoe]

Did Eric ever hear whether his can manufacturer said yes or no on whether their 308 can could be used on the 7.62x39 XCR?

 

[MickeyC]

Would you say it is adequate if you can insert a 7.62 bullet loosely in the end of the can with about the same clearance as a .308 round?

No, because bullets can cavitate before they stabilize and this often causes problems if the can is too tight. Check with the vendor.

 

[Underground]

Yes, the Phantom 7.62 suppressor is fine to use with 7.62x39.

I've shot it several times on a 7.62x39 XCR.

 

[EricCartmann]

Yes, the Phantom 7.62 suppressor is fine to use with 7.62x39.

I've shot it several times on a 7.62x39 XCR.

same here, ran the phantom on my XCR without issues.

 

[Difranco]

Eric I think you missed this thread here
http://xcrforum.com/index.php/topic,11983.msg165232.html#msg165232

and his blog write-up
http://emptormaven.com/2011/09/7-62-thumper-subsonic-xcr-rifle/

This is the route I will probably go...

 

[EricCartmann]

Eric I think you missed this thread here
http://xcrforum.com/index.php/topic,11983.msg165232.html#msg165232

and his blog write-up
http://emptormaven.com/2011/09/7-62-thumper-subsonic-xcr-rifle/

This is the route I will probably go...

That is awesome that it cycles on it's own. I need to work up my own subsonic ammo for my XCR.

I have one question about his subsonic load, Why is it still loud? Check out my subsonic ammo I loaded up with .308 bullets using my Savage and YHM Phantom Silencer.

 

[Difranco]

I have one question about his subsonic load, Why is it still loud? Check out my subsonic ammo I loaded up with .308 bullets using my Savage and YHM Phantom Silencer.

http://youtu.be/GkFhBR8tXT0

Hard to say from the two recordings. Could be sensitivity of the mics on the cameras maybe? Different Silencers will sound different.

I also wonder if environmental factors play a role such as humidity, barometric pressure, etc.? These do affect the calculation for the speed of sound, so it does seem to reason that sound waves maybe affected in general?

I do think having a 7.62x39 barrel for .308 handloads is just an awesome idea as it opens up the field to a wide range of bullets.