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  #11  
Old 05-15-2009, 10:59 PM
pug pug is offline
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Join Date: Mar 2005
Posts: 286
I am going to assume if you live in the US you know the laws regarding making even a single suppressor baffle.

Pressure, velocity and SPL are all interrelated so porting effects all three. Most integrals will not cycle shooting subsonic ammunition. The Amphibian would hardly cycle shooting HV rounds until broke in or at least that is what was reported when it was first released.

If you are looking for good suppressor reference material, Alan Paulson's book, Silencers:History and Performance is excellent and the $35 is well spent. It does not have design details on some of the newer baffles like the "K" but it does have info on some asymetrical designs and the overall info on suppressors is invaluable. Good luck with your design and happy shooting.
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  #12  
Old 05-16-2009, 12:44 AM
Fudmottin Fudmottin is offline
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Join Date: Dec 2008
Posts: 121
Absolutely! This project will not begin without getting the Form-1 tax stamp back. All NFA + GCA rules will be followed.

I've got volume one of Al Paulson's book and will be ordering volume 2. I can't wait for volume 3 to actually come out. It seems Al Paulson must be a fan of DEK (inside joke. If you don't get it, don't worry). Anyway, Vol 1 has been a good read so far. I recommended it to certain government officials who allegedly represent me in PA and USA house and senate.

The SRT does not have the problems of the Amphibian. In fact, if I hadn't gone blowing all sorts of money on silly things like metal working tools (hobby grade), I would have Doug fix me up. I'm sure his is better than mine. But I'm equally sure that mine is better than AWC's. I would actually have SRT fix me up anyway except that I do have a rather healthy level of intellectual curiosity about the entire subject of suppressor design. The subject is quite fascinating on every level.

BTW, I use the same nick on Silencer Talk as I do here and some other internet places. I don't want HOMSEC having any problems tracking me ;-)

Since you are familiar with Paulson's work, you will also be familiar with Mark White. I am following the guidelines laid out in Patent 7,073,426 for my design. That will be for the portion ahead of the muzzle obviously. The reasons are simplicity of design and manufacture. I could certainly make Ks. I am familiar with several different variations on the K baffle. However, they require more labor than simple slant baffles.

I'm aware that YHM's Mite did not rate well on Silencer Research. I suspect there are a couple reasons for that. One is the lack of the symmetrical blast baffle with diffusion holes near the periphery. The other has to do with the baffles being too close together for the gas jet to be deflected enough to miss the bore hole.

I could be wrong of course.

My engineering education is from an entirely different background. And as such, I can't help but see that there seems to be a lot of "ad hoc" design work. Even the MIL standard is unscientific. They are fine with the type of microphone, placement, and calibration. But then they go and do the test outdoors over grass. That is not reproducible. You need a much more controlled environment than that.

Also people seem to be guessing at how the gases actually flow in a stochastic system.

The state of the art is what it is. I wish I had time to pursue all my interests. Given time and resources, I could probably accurately model real gas flows in a suppressor. Although the way I write code, a serious amount of CPU, memory, and bus bandwidth resources would be required. I think the NSA has what I need. LANL probably does too.

Thanks for the well wishes. I know I am a complete amateur in this. It will take some tenacity and time to achieve professional level results. I think Form-1 cans only save you money when you already have the tools and knowledge of using them. Add to that other issues such as finite element analysis to know how strong things need to be and how to make them just that strong and computational fluid dynamics to get you to a real world prototype for testing which also requires some rather pricey equipment.
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  #13  
Old 07-06-2009, 04:44 PM
querty querty is offline
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Join Date: Jul 2009
Posts: 1
Can anyone please tell me which type of Ruger Mk2 is the best platform to
create an integral from? I live in France and info on Rugers is rare here.
I notice that companies in the US that do conversions on Mk11`s seem to
charge less for ones with a bull barrell! why is that? I`m an engineer and
plan to build my own integral. When I`ve finished it I`ll post the the results
on the site including MV and sound reduction (I`m also a sound engineer)
done above grass, which is perfect due to Sabine loss! I would much appreciate
use of you experts out there on the Ruger.
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  #14  
Old 07-16-2009, 05:17 PM
Hoser Hoser is offline
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Join Date: Feb 2008
Posts: 342
Why not just run a 4 inch barrel and thread on a same OD can and polish it to a perfect finish where you cant see the seam.

You start putting holes/ports in the barrel and accuracy *will* suffer. My JET intergal can on my 10/22 is quiet, but not that accurate with any ammo.
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