New cat on the block.....

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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Joel45acp
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Location: San Antonio

New cat on the block.....

Post by Joel45acp » Fri Aug 02, 2019 4:01 am

So, I’m a new member of this sight and I must say, I’ve found a ton of info moving forward on my F1 build and I’ve enjoyed seeing some rather handy work from some of you gents. I do have some questions about my build so please pardon my inexperience in this field. I’m currently gathering my supply list for a 30cal can which will be used on a Remmy 300blkout bolt gun with both supers and subs. It might see some slight use on a 16” 6.8SPCII AR platform. My current thought is an 8”x1.5”(D size)Ti tube with a Ti thread protector and an Al end cap. The internals would be either stainless cups, stainless freeze plugs or Ti cups. Do you gents think I would have enough volume with the tube mentioned to achieve adequate suppression? Thanks for your input and excited to join the quiet thunder crowd. God Bless
Joel C


Jeremiah 29:11

poikilotrm
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Re: New cat on the block.....

Post by poikilotrm » Fri Aug 02, 2019 9:59 am

That is around the volume of a lot of commercial cans. How thick is the end cap? Al will need to be a bit stouter than steel.
The moments I was censored was the moment that I won. That's twice, now.Thanks jwbaker, et al, for my victories.

ECCO Machine
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Re: New cat on the block.....

Post by ECCO Machine » Fri Aug 02, 2019 11:35 am

Certainly. 1.5" x 8"-9" is pretty much the sweet spot for a .30 rifle can. My two production .30 models are Valkyrie (1.5" x 8") and Furtivus (1.5" x 9"). You'll find that most other manufacturers have one or more .30 model in that size range.
FFL07/02SOT Gunsmith & Machinist

Joel45acp
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Posts: 13
Joined: Wed Jul 31, 2019 11:09 pm
Location: San Antonio

Re: New cat on the block.....

Post by Joel45acp » Fri Aug 02, 2019 11:43 am

poikilotrm wrote:
Fri Aug 02, 2019 9:59 am
That is around the volume of a lot of commercial cans. How thick is the end cap? Al will need to be a bit stouter than steel.
Would it be your recommendation that I’d go either carbon steel, SS or Ti for the end cap as opposed to a 6061 Al cap? I’m thinking of utilizing 10 to 12 freeze plugs with spacers in between. I was also considering the high wall freeze plugs thus avoiding the spacers in between the plugs for the most part. I believe the high wall plugs measure approximately 0.75” thus allowing me to utilize 10 in my tube. Does that sound adequate? Thanks again for any insight. God Bless
Joel C


Jeremiah 29:11

3strucking
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Re: New cat on the block.....

Post by 3strucking » Fri Aug 02, 2019 5:02 pm

why did you choose freeze plugs over turning your own?

poikilotrm
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Re: New cat on the block.....

Post by poikilotrm » Fri Aug 02, 2019 7:46 pm

Steel beats Ti and Al for an end cap.
The moments I was censored was the moment that I won. That's twice, now.Thanks jwbaker, et al, for my victories.

Joel45acp
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Posts: 13
Joined: Wed Jul 31, 2019 11:09 pm
Location: San Antonio

Re: New cat on the block.....

Post by Joel45acp » Fri Aug 02, 2019 8:10 pm

3strucking wrote:
Fri Aug 02, 2019 5:02 pm
why did you choose freeze plugs over turning your own?
I don’t have the proper tools( lathe, mill etc) to turn my own so I’m left with what’s commercially available.
Joel C


Jeremiah 29:11

Joel45acp
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Posts: 13
Joined: Wed Jul 31, 2019 11:09 pm
Location: San Antonio

Re: New cat on the block.....

Post by Joel45acp » Fri Aug 02, 2019 8:11 pm

poikilotrm wrote:
Fri Aug 02, 2019 7:46 pm
Steel beats Ti and Al for an end cap.
You’re referring to carbon steel correct? Steel caps would lower my overall cost by quite a bit too. Thanks for the insight sir.
Joel C


Jeremiah 29:11

3strucking
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Re: New cat on the block.....

Post by 3strucking » Fri Aug 02, 2019 9:36 pm

You could use valve spring retainers instead of freeze plugs. You can get them in titanium and chrome moly and should outlast freeze plugs.

poikilotrm
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Re: New cat on the block.....

Post by poikilotrm » Sat Aug 03, 2019 4:43 pm

Joel45acp wrote:
Fri Aug 02, 2019 8:11 pm
poikilotrm wrote:
Fri Aug 02, 2019 7:46 pm
Steel beats Ti and Al for an end cap.
You’re referring to carbon steel correct? Steel caps would lower my overall cost by quite a bit too. Thanks for the insight sir.
Think of the end cap as a final baffle, but it cannot move, so all stress encountered by the cap is absorbed by the tube, the threads, and the cap itself.
The moments I was censored was the moment that I won. That's twice, now.Thanks jwbaker, et al, for my victories.

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