Booster advice

Yes, it can be legal to make a silencer. For everything Form-1, from silencer designs that are easily made, to filing forms with the BATF, to 3D modeling. Remember, you must have an approved BATF Form-1 to make a silencer. All NFA laws apply.

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ranb
Silent But Deadly
Posts: 1997
Joined: Sun Sep 18, 2005 6:53 pm
Location: WA, USA

Booster advice

Post by ranb » Thu Jan 30, 2020 4:28 pm

The forum search function is only returning a wall of text that look like this;
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And a search of the first 6 pages does not reveal what I need.

The 2003 experiment in making a 9mm can for my Browning HP was a failure in that instead of a booster I used a hot subsonic load and a light weight can with a cut down slide spring. It worked for a few hundred rounds until the barrel locking lugs were damaged. The thick K baffles I used are no longer anywhere near as effective as cans made in the last several years.

I have not made a can for a few years, but I bought a Springfield XDM in 9mm with a threaded barrel and tall sights.

So now I'm going to make an all stainless welded can about 7 inches long and 1.5" in diameter. I'll make the baffles/tubing as thin as I dare but this one will have a recoil booster so it will function properly on a Browning type pistol. It will be chemically cleaned when it starts to gain weight.

http://www.ajguns.net/oc/9mm_booster
This one looks simple. I would just make the silencer with any ordinary end cap and 1/2-28 threads then attach it to the booster. Looks like the bullet will travel a ways before it reaches the first baffle. Any down side to this?

https://www.form1builder.com/product/ge ... 1-12-kits/
https://libertycans.net/product/recoil- ... -assembly/
https://sdtacticalarms.com/-Booster_p_151.html
These boosters attach to the silencer in a more conventional manner. I think making the threads to mate with the booster on my hobby lathe will not be a problem.

Any suggestions? Thanks.

Ranb
SilencerTalk was a place I could disccuss making registered silencers without being told I was a criminal. That is no longer true. http://www.silencertalk.com/forum/viewtopic.php?f=132&t=99273

Matt in TN
Silent Operator
Posts: 64
Joined: Tue Jun 09, 2015 10:11 am

Re: Booster advice

Post by Matt in TN » Thu Jan 30, 2020 6:19 pm

No help here, but I'm following to learn something. A pistol can is lilely my next project, and I need to decode the black magic of boosters.

Rifleshooter2
Member
Posts: 13
Joined: Sat Apr 25, 2009 11:32 am
Location: Plum Pa

Re: Booster advice

Post by Rifleshooter2 » Thu Jan 30, 2020 8:07 pm

I used the SD Tactical on a 45 caliber suppressor I made. The tube and K baffles are aluminum. I have used it on my FNX 45 Tactical and my Glock 41. It works perfectly.

ranb
Silent But Deadly
Posts: 1997
Joined: Sun Sep 18, 2005 6:53 pm
Location: WA, USA

Re: Booster advice

Post by ranb » Thu Jan 30, 2020 8:10 pm

A simple drawing. The 6" long baffle section will be made from 1.5", 0.035" wall, 304 stainless tubing. I'll use a mixture of 60 degree clipped cones and K baffles. The clips and ports are not shown.

Image
SilencerTalk was a place I could disccuss making registered silencers without being told I was a criminal. That is no longer true. http://www.silencertalk.com/forum/viewtopic.php?f=132&t=99273

ranb
Silent But Deadly
Posts: 1997
Joined: Sun Sep 18, 2005 6:53 pm
Location: WA, USA

Re: Booster advice

Post by ranb » Thu Jan 30, 2020 9:27 pm

Rifleshooter2 wrote:
Thu Jan 30, 2020 8:07 pm
I used the SD Tactical on a 45 caliber suppressor I made. The tube and K baffles are aluminum. I have used it on my FNX 45 Tactical and my Glock 41. It works perfectly.
You take it apart to clean? How fast does it gather gunk if you only use center fire jacketed ammo in it? I'd love to use aluminum if I never had to clean it.

Did you use thread locking compound on the booster threads to keep it on the silencer tubing? Thanks.
SilencerTalk was a place I could disccuss making registered silencers without being told I was a criminal. That is no longer true. http://www.silencertalk.com/forum/viewtopic.php?f=132&t=99273

Rifleshooter2
Member
Posts: 13
Joined: Sat Apr 25, 2009 11:32 am
Location: Plum Pa

Re: Booster advice

Post by Rifleshooter2 » Thu Jan 30, 2020 10:36 pm

You take it apart to clean? (Yes about every couple of hundred rounds) fast does it gather gunk if you only use center fire jacketed ammo in it? (Not too bad. After clean it I give all the baffles a coat of white lithium grease I only use jacketed or poly coated bullets) I'd love to use aluminum if I never had to clean it.

Did you use thread locking compound on the booster threads to keep it on the silencer tubing? (I coat all the threads with anti seize compound) Thanks.
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ECCO Machine
Silent But Deadly
Posts: 632
Joined: Tue Nov 28, 2017 7:34 pm

Re: Booster advice

Post by ECCO Machine » Fri Jan 31, 2020 1:01 am

The AJ Guns booster is garbage. Hard pass

The Liberty is the best one, but you pay a little more for it.

SDTA boosters have aluminum housings, but seem to hold up fine. Tolerances and fit & finish on the examples I've seen are good, and their pricing is very reasonable, especially with extra pistons for just $30. I would not hesitate to run SDTA boosters on my own stuff. As it were, I make my own internal boosters, but I have brought in more than one SDTA booster for customers who wanted an external that could be swapped with 3 lug and direct thread mounts.

The SDTA and Liberty have the same mounting threads, as do the Gemtech externals.
FFL07/02SOT Gunsmith & Machinist

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