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View Full Version : Will a .311 supressor work right on a .308?



sheepdog
02-17-2012, 01:05 PM
Debating to get a suppressor for a 300 Blackout. Thought why not get a .311 to use on my russian toys as well, will .003 make that much difference? Anyone know?

felix
02-17-2012, 01:09 PM
For your purposes, yes, provided you can hook it up properly. ... felix

Herb in Pa
02-17-2012, 01:38 PM
Shouldn't be a problem, I use my 9mm suppressor on a 357 Handi Rifle. I did contact the manufacturer before I tried it.

Artful
03-01-2012, 03:48 PM
most suppressors have a latitude for bullet yaw so if you measure your 9mm (.355-.358 bore) suppressor it will most likely be .400 or even larger - I use my .30 caliber can on my Mosin '93 without issue lots of others use on AK's - biggest issue would be pressure - if your can is rated for 300 whisper subsonic only and you used with like higher pressure supersonic cartridges .308 or 7.62x54R then that would be a problem. So contact the maker before buying to confirm what it will stand up too. Also be aware that with comblock ammo you may have corrosive primer's that you will have to soak to clean up after.

http://img.photobucket.com/albums/v355/rowdyfisk/Misc/0612112302.jpg

andremajic
03-31-2012, 10:14 AM
Artful, have you tried the chamber inserts that sportsmans guide sells for your russian? It allows the use of 32 acp pistol ammo.

I've used it, and it's pretty quiet unsuppressed, like a "cat's sneeze load".

Andy.

LuvMy1911
04-09-2012, 09:48 PM
"chamber inserts that sportsmans guide sells for your russian"

That sounds interesting... I couldn't find it though... could someone post a part number or a link please?

Thanks in Advance

nicholst55
04-09-2012, 11:04 PM
A lot of people use .308 suppressors for .223 with perfectly acceptable results. Your application should work even better.

andremajic
04-15-2012, 07:39 AM
"chamber inserts that sportsmans guide sells for your russian"

That sounds interesting... I couldn't find it though... could someone post a part number or a link please?

Thanks in Advance

http://www.sportsmansguide.com/net/cb/762x54r-to-32-cal-multi-chamber-insert.aspx?a=587989

here's a link

blademasterii
04-15-2012, 08:38 AM
This is my next planned purchase. http://www.swrsuppressors.com/products/pistol/octane-9-hd#media. It comes apart, is made from stainless and has a lifetime warranty.

20nickels
04-18-2012, 03:46 PM
A lot of people use .308 suppressors for .223 with perfectly acceptable results. Your application should work even better.

They acutally aren't much louder with the .30 can. Would be the way to go if you had both.

The chamber inserts work but accuracy is sub par. Additionaly you have to manually exract each spent casing, dowl rod. I'm going to reload .32 SWC for my Mosin in the 54r brass. Should feed from the mag as well as being accurate.

Artful
04-21-2012, 10:12 AM
Artful, have you tried the chamber inserts that sportsmans guide sells for your russian? It allows the use of 32 acp pistol ammo.

I've used it, and it's pretty quiet unsuppressed, like a "cat's sneeze load".

Andy.

Nope, don't own a 32 acp but reload so no need too. :drinks:

41 mag fan
04-21-2012, 10:44 AM
This is my next planned purchase. http://www.swrsuppressors.com/products/pistol/octane-9-hd#media. It comes apart, is made from stainless and has a lifetime warranty.

I just wonder if that suppressor will handle sub and supersonics from the 300 blk using cast?

i've been searching on other forums, on info for the silencer I'm wanting and keep getting pointed to the Liberty Mystic suppressor

Artful
04-25-2012, 12:44 AM
I just wonder if that suppressor will handle sub and supersonics from the 300 blk using cast?

i've been searching on other forums, on info for the silencer I'm wanting and keep getting pointed to the Liberty Mystic suppressor

Subsonic is demo'd, you'd have to ask about supersonic - but my guess is no as most 9mm can's can't handle that much pressure repeatedly.

http://www.youtube.com/watch?v=w46Tnh_rGdg

http://www.youtube.com/watch?v=byfitWx1kYE

scb
04-25-2012, 11:50 AM
FWIW here's another.
http://www.youtube.com/watch?v=7qkJxXmvj6w

Artful
04-25-2012, 07:18 PM
Yep, notice the disclaimer at the beginning - for subsonic ONLY

Brithunter
05-04-2012, 08:27 AM
Hmmm well the use of Sound Moderators is quite widespread here in the UK especially for varminting and Deer Stalking where their use is seen as good control against Noise Pollution and on health and Safety grounds protecting peoples hearing.

However these uses are with full power loads with cartridges from the .222 Rem up through .243, 270 Win, 7mm, .308, .30-06 etc.

Use with such cartridges puts far more wear and tear on a moderator. I have one of modular build of the Reflex (over the barrel type) that has been used on .243 Win, 6.5x55 and 25-06 rifles:-

http://img.photobucket.com/albums/v166/Brithunter/Sound%20Moderator/PICT0104.jpg

http://img.photobucket.com/albums/v166/Brithunter/Sound%20Moderator/PICT0105.jpg
It's a Wildcat Predator 8 of 300 length.

http://img.photobucket.com/albums/v166/Brithunter/Sound%20Moderator/PICT0106.jpg
These are some of the modular bits.

http://img.photobucket.com/albums/v166/Brithunter/Sound%20Moderator/PICT0110.jpg
Stripped down to modules.

http://img.photobucket.com/albums/v166/Brithunter/Sound%20Moderator/PICT0107.jpg
Stainless blast shield and alloy baffle stack in this module.

http://img.photobucket.com/albums/v166/Brithunter/Sound%20Moderator/P2110137.jpg
Note the pitting showing at the very front of the blast shield. This is after some 500 rounds of ful power rifle loads. If I was to eave this assembled for 800 shots you would have one heck of a job getting it apart but then of course firing one round of 25-06 is equal to firing perhaps 10 rounds of 9mm Para.

Fitted to the Parker-Hale 1200C in 25-06:-

http://img.photobucket.com/albums/v166/Brithunter/Sound%20Moderator/PICT0103.jpg

The gunclub nearest me is constructing a 100m outdoor range and due to the planning consent all guns used on it after a certain time of the afternoon will have to use a sound moderator to reduce noise pollution.

The draw backs of such use are increased barrel heating and mirage off the sound moderator when using full power rifle cartridges. carrying a rifle so fitted in the field is rather a pain as the extra weigh and length at the muzzle makes the rifle want to swing about and not stay on ones shoulder when stalking let alone upsetting the handling and balance of a fine hunting rifle. I own one because as I have to take my stalking by the day or outing and pay for such. Some places/estates insist on their use.

The moderator MUST also be removed as soon as possible after finishing shooting as as it cools the gases left in the expansion chamber and baffle stack tend to be drawn back into the bore of the barrel and these are hydroscopic in nature and attract moisture which then attacks the bore as those who have not removed mods have found out to their cost with rust pitted crowns and first few inches of the muzzle of the bore.

I notice that not many moderator manufacturers mention this risk but it's keeping quite a few gunsmiths in work replacing pitted barrels here in the UK.

303Guy
05-07-2012, 01:49 AM
Interesting. I've build a suppressor for a 243 which is a silencer, not a 'moderator'. It ads 60mm to the gun's length and is not very heavy at all. It removes all the muzzle blast and the bullet is not that noisy either. I'd be very reluctant to take a gun in the bush without a suppressor because of the danger of getting gunk in the muzzle. During my last outing I had the muzzle jab the ground several times during a slip.:shock: I used the gun but a few times to give me grip on going up! (It has a specially modified butt plate for that purpose).

Brithunter
05-07-2012, 04:37 AM
If you look into this a Moderator reduces the muzzle report by a certain amount. Silencers are another matter entirely. A blocked exit to a moderator will still cause damage as will not having it screwed on tight with a slightly lose thread. More than one has been wrecked with a bullet missing the exit and hitting the insides of the can instead.

Due to a mix up in the shop when we were pulling apart the mods for me to see how they are stripped for cleaning and how they are made. Instead of the .30 cal one I asked for I actually ended up with a .243 baffle stack and blast shield. Speaking to the manufacturer after discoverign this at home he said that using it for the 25-06 would be fine and it should be a bit quieter than when using it for the .243.

A noise meter may be able to tell the difference my ears cannot.

It was brought for use on the 25-06 hence the magnum rated one due to the gas volume produced by the 25-06 cartridge

Later I tried a 6.5mm bullet to see just how much clearance there was in the blast shield and baffle stack and I concluded there was enough so threaded the muzzle of my Swedish 6.5x55 and tried it and yep it's fine so i am actually using a .243 moderator on all three. A .270 bullet will not enter the blast shield and baffle stack.

The one I have is this:-

Wildcat 300
Weight - 880g (31 ounces)
Length - 306mm (12 inches)
Diameter - 50mm (2 inches)
Calibre - Magnums

These moderator only add 95mm to the overall length of the rifle when fitted. Rear of the moderator is supported on a derin bush, the tube is sealed on 0 rings for a perfect seal.

The Wildcat moderators are made entirely from Stainless Steel, (Bead Blasted Matt Stainless Steel and Powder Coated Black Stainless Steel)

Other threads and moderator lengths to special order, the exit hole at the muzzle of these Wildcat Moderators is adjustable to take a larger calibre if you change rifles

These Wildcat Moderators are built to last a lifetime and are strippable for cleaning

http://www.wildcatrifles.co.uk/fullbore.html

Heavy sucker as you can see by adjustable they mean you buy a new blast shield and baffle stack.. In the last year or so lighter ones from other makers have come onto the market here including Titanium ones but sheesh are they expensive. I thought the Wildcat was dear enough thank you.

Oh yes here in the UK a sound moderator is classed as a firearm unless it's an air rifle one :confused: one cannot buy one to put onto a cartridge rifle whether rim-fire or centre fire without an open slot on one Firearms Certificate. making ones own and using it if caught would mean loss of licence and possibly a stay in prison. If fact one would probably get less time for murder than making and using an unlicensed sound moderator.

303Guy
05-07-2012, 05:59 AM
Strange! Perhaps it's to do with criminal misuse of suppressors. Looking at the design of that 'moderator' I can see why it should be called a moderator. It won't remove all the muzzle blast but it will help a lot! I can't share my suppressor design details as I haven't patented it yet. Pity 'cause y'all might be interested.

Brithunter
05-08-2012, 08:31 AM
No it's to do with the fear that governments have of the populace. They fear that the populace might wake up and realise just exactly whom the criminals are.

here in the UK the Governmant actively feeds the fear of the populace on crime. Without the people being afraid they would question all the surveilance cameras everywhere.

303Guy
05-08-2012, 10:53 PM
Crazy. I don't understand why suppressors or moderators are not compulsory and muzzle brakes not shrouded. A shrouded muzzle break does the same job but cuts the muzzle blast by at least a half, not increasing it. My simple one is actually a moderator and adds no more to the overall length than a conventional muzzle break. Anyway, I digress ....

Artful
05-08-2012, 11:53 PM
No it's to do with the fear that governments have of the populace. They fear that the populace might wake up and realise just exactly whom the criminals are.

here in the UK the Governmant actively feeds the fear of the populace on crime. Without the people being afraid they would question all the surveilance cameras everywhere.

The world is like that, and once the poor figure out they can have the politicians give them stuff in exchange for votes the real change in society begins until the collapse of it. :groner:

303Guy
05-09-2012, 02:05 AM
'Fraid that might just be the truth!