12 gauge Shotgun suppressor ideas.

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LavaRed
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12 gauge Shotgun suppressor ideas.

Post by LavaRed »

Hello everybody. As you know I have recently been experimenting with shotguns. However, I am intrigued as to how I may suppress a single shot, 12 gauge shotgun. Therefore, I would like to ask for your help and input.

Namely:
1) Is it better to do an integral or a screw-on suppressor?
2) How long should the barrel be, at minimum, before the suppressor?
3) What kind of baffles are most suitable?
4) Does the suppressor require a ported barrel extension to run its full length, because of pellet dispersion?
5) Can anyone provide pictures or schematics of previous designs?

Thank you very much,
LavaRed
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Crosshair
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Re: 12 gauge Shotgun suppressor ideas.

Post by Crosshair »

4) Does the suppressor require a ported barrel extension to run its full length, because of pellet dispersion?
My guess would be "probably". I can't find the it now, but there was a Youtube video that happened to have a lot of high-speed shots of shotguns and the shot cup opened up rather quickly once exiting the muzzle.
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Bowen1911
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Re: 12 gauge Shotgun suppressor ideas.

Post by Bowen1911 »

I can't find it, but there are some pics on photobucket that I think ranb posted, and there is a MS paint of a integral single shot
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Re: 12 gauge Shotgun suppressor ideas.

Post by doubloon »

http://www.youtube.com/watch?v=BDtd2jNIwAU MUSAFAR!
http://www.youtube.com/watch?v=8CrOL-ydFMI This is Water DavidW
Complete Form 1s http://www.silencertalk.com/forum/viewtopic.php?f=10&t=79895
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Re: 12 gauge Shotgun suppressor ideas.

Post by ranb »

I designed a shotgun can, but I have no good way to port a barrel. A drill bit will not do. I might have my 20 gauge barrel ported someday and make a can for it.

Image

Ranb
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Bowen1911
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Re: 12 gauge Shotgun suppressor ideas.

Post by Bowen1911 »

Thats the picture I was trying to find. I want to try it with a .410
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Re: 12 gauge Shotgun suppressor ideas.

Post by Capt. Link. »

I don't have the patent # but there is a company in CA.that has a design that is worth looking at.You may look up the patent on free patents online it is also listed in the NR Parker book.Shotgun cans are tough due to low pressure and large bore and then the whole shot cup thing.Best of luck always look forward to your posts.
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este
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Re: 12 gauge Shotgun suppressor ideas.

Post by este »

Capt. Link. wrote:I don't have the patent # but there is a company in CA.that has a design that is worth looking at.You may look up the patent on free patents online it is also listed in the NR Parker book.Shotgun cans are tough due to low pressure and large bore and then the whole shot cup thing.Best of luck always look forward to your posts.
Is Ops Inc the one you're talking about? IIRC that guy has a patent on a shotgun suppressor.
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Re: 12 gauge Shotgun suppressor ideas.

Post by sitsinhedges »

ranb wrote:I designed a shotgun can, but I have no good way to port a barrel. A drill bit will not do. I might have my 20 gauge barrel ported someday and make a can for it.

Image

Ranb
Why wont a normal drill port your barrel? I have done mine without a problem and used a deburring tool around the inside of the hole to clean it up.
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Re: 12 gauge Shotgun suppressor ideas.

Post by ranb »

I found that the edge left when drilling the hole was too much. I was not able to deburr a 1/8th inch hole.

Ranb
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hotbrass
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Re: 12 gauge Shotgun suppressor ideas.

Post by hotbrass »

Its a shotgun barrel. You just lap it a few times and whatever thin burr is left inside the hole will not be protruding into the bore and will be blown or burned out after a few shots.
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Re: 12 gauge Shotgun suppressor ideas.

Post by mx201er »

the question is how many ports can you drill, and how close, without compromising the structural integrity of the barrel?
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Re: 12 gauge Shotgun suppressor ideas.

Post by sitsinhedges »

mx201er wrote:the question is how many ports can you drill, and how close, without compromising the structural integrity of the barrel?
Well the Hushpower types we have in the UK have 5 pairs of 5mm holes at 50mm centres beginning at 250mm from the breech up to 450mm then at 500mm a row of four holes at 15mm centres that end 120mm from the muzzle. This is for a 20g o/u. The .410 just has 5 pairs of 4mm holes starting 240mm from the breech at 50mm centres. All the powder should be burnt by the time the shot passes the porting. The burrs are removed with a curved blade pen type deburring tool that goes into the hole and scoops the burrs away from outside. There is no need to put anything inside the outer tube or to divide it into compartments. These guns also have baffles past the muzzle for 100-150mm.
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Re: 12 gauge Shotgun suppressor ideas.

Post by andy h »

Here is the website of the manufacturer/distributer here in England , see if you can glean any info there.

http://www.saddleryandgunroom.co.uk/Gun ... hpower.htm
darkelement07
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Re: 12 gauge Shotgun suppressor ideas.

Post by darkelement07 »

I understand how to port the barrel. My question is how do you mount the can over the barrel? What piece do you need? Where can you find the materials needed?

If anyone has any additional info please let me know.
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Re: 12 gauge Shotgun suppressor ideas.

Post by LavaRed »

darkelement07 wrote:I understand how to port the barrel. My question is how do you mount the can over the barrel? What piece do you need? Where can you find the materials needed?

If anyone has any additional info please let me know.
Silver-solder a steel rear endcap to the rear of the barrel, then screw on the rest of the suppressor to that.
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Re: 12 gauge Shotgun suppressor ideas.

Post by one-eyed Jack »

I ported a 20 ga 28" single bbl shotgun with 88 .44" dia. holes. The full length aluminum tube is 2.5 in. O.D., .125 wall. Between the bbl and the tube are st. st. and aluminum mesh. I run it wet using 10% water soluble cutting oil and tap water. This combination cools the gases well. There is a cap at both ends and the end of the bbl is theaded for a nut to draw the whole assembly together. It's 20 yrs old now, easy to take apart and clean, very quiet and always draws a crowd at the range. Jack.
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Re: 12 gauge Shotgun suppressor ideas.

Post by johnnylawn »

I was thinking about this too, its nice how it has come up. I want to design a 12 ga. too.

Should be all ported and sectioned off into large chambers? Would K's or cones work toward the muzzle?

If K's could work, I think it might be helpful. I just think the cup will start to expand once into the suppressor portion of the can.


Anyone else?

Also, I saw the WinLite - loads have a velocity of 980 fps. I think these might be helpful too.


Thoughts?
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Re: 12 gauge Shotgun suppressor ideas.

Post by one-eyed Jack »

I would not use baffles. You want the shot and wad to be contained all the way to the end of the bbl. The wet packing is amazingly effective. A can on the end is just a Hollywood thing. Jack.
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Re: 12 gauge Shotgun suppressor ideas.

Post by one-eyed Jack »

I would not use baffles. You want the shot and wad to be contained all the way to the end of the bbl. The wet packing is amazingly effective. A can on the end is just a Hollywood thing. Jack.
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Re: 12 gauge Shotgun suppressor ideas.

Post by johnnylawn »

Thanks for the input. My plan was to do a 2-point mount. 2 3/4" Stainless tube mounted near the barrel lug on a fixed mount with a step cut into it for centering. The other point will be at the muzzle where another fixed piece the (I.D. of the stainless). The suppressor would slide over the front mount and thread on or set screw to the rear mount. The original barrel would stay to length and be ported. At the muzzle is where I would start the k's or cones.

I was looking at the patents online and noticed a cone type baffle set up. My concern is with the wad opening to early.
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Re: 12 gauge Shotgun suppressor ideas.

Post by driver6814 »

I want to put a silencer on my 870. To do this;

I want to use a METRO barrel, threaded for Remchoke. The Metro tube already has some porting, I would of course add more, cut to length, add end caps and an outer tube.

This way I would have a removable silencer that could be used on any remington. I can also use the other threaded end cut short as a thread protector.

Metro barrels are cheap on GB. I have alot more ideas on this, But you get the gist, I hope
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Re: 12 gauge Shotgun suppressor ideas.

Post by hotbrass »

If your going to use a Metro tube it will be silent enough without spending a bunch to make a suppressor out of it.
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Re: 12 gauge Shotgun suppressor ideas.

Post by one-eyed Jack »

You can build a very effective suppressed shotgun like mine for short money. For all you need to know, go to Northeastshooters.com, register for free, look up one-eyed Jack, find " All threads started by one-eyed Jack" and go to my 9-18-08 post - "prototype suppressed shotgun". There will be all the details and pics. Mine is very quiet ( think .22 short). Your results may vary. Do it legally, of course. Jack.
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Re: 12 gauge Shotgun suppressor ideas.

Post by BeerWolf »

one-eyed Jack wrote:You can build a very effective suppressed shotgun like mine for short money. For all you need to know, go to Northeastshooters.com, register for free, look up one-eyed Jack, find " All threads started by one-eyed Jack" and go to my 9-18-08 post - "prototype suppressed shotgun". There will be all the details and pics. Mine is very quiet ( think .22 short). Your results may vary. Do it legally, of course. Jack.
Or here's a direct link, but you still need to register to see the pictures:

http://www.northeastshooters.com/vbulle ... ed-Shotgun
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