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 Post subject: Bore size?
PostPosted: Mon Jun 06, 2011 11:11 pm 
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Silent But Deadly

Joined: Sat May 30, 2009 9:20 pm
Posts: 167
Location: lititz, PA.
What bore size is standard for 7.62/.30 cal cans?
Thanks


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 Post subject: Re: Bore size?
PostPosted: Mon Jun 06, 2011 11:51 pm 
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Silent But Deadly

Joined: Sun Nov 04, 2007 2:35 am
Posts: 179
rqlasl wrote:
What bore size is standard for 7.62/.30 cal cans?
Thanks


There is no "standard" suppressor aperture diameter for a given caliber.

I would make the aperture diameter 20% greater than the barrel groove diameter as a median reference. Then, adjust that value for tolerances, length, concentricity, etc.

You could also use a tapered hole design.


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 Post subject: Re: Bore size?
PostPosted: Tue Jun 07, 2011 6:59 am 
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Silent But Deadly

Joined: Sat May 30, 2009 9:20 pm
Posts: 167
Location: lititz, PA.
That would be about .360
I was thinking .375 but was nervous about clearance.
The primary host will be a romanian sar-1 and also will go on my savage 111
would .400 be overkill?
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 Post subject: Re: Bore size?
PostPosted: Tue Jun 07, 2011 9:58 am 
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Silent But Deadly

Joined: Thu Apr 15, 2010 8:20 pm
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Location: The South
.400 is not the best bore size but it certainly isn't "overkill". Typically a larger bore/tapered bore lead to less blowback as it is harder for the gas to come back into the barrel than it is to leave the silencer.


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 Post subject: Re: Bore size?
PostPosted: Wed Jun 08, 2011 6:12 am 
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Silent But Deadly
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rqlasl wrote:
That would be about .360
I was thinking .375 but was nervous about clearance.

The std is .375 and that's based on checking cans from Gemtech, SWR, SCRC and AWC in the past.



.

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 Post subject: Re: Bore size?
PostPosted: Wed Jun 08, 2011 6:15 am 
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Silent But Deadly

Joined: Sat May 30, 2009 9:20 pm
Posts: 167
Location: lititz, PA.
Thank you for the replies...


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 Post subject: Re: Bore size?
PostPosted: Wed Jun 08, 2011 9:07 am 
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Silent But Deadly
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Joined: Sat Apr 30, 2005 4:23 am
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Location: Finland
We have a .334 bullet channel in our .30 calibre NorthStar suppressors and a .342 bore on our jet-Z suppressors.

It would look to be tighter compared to many of the U.S. suppressors, however we have not received many complaints about accuracy or excessive point of impact shift, with thousands of the above mentioned suppressors sold over the last 10 years.

All our suppressors are checked atleast twice during production and our warranty return numbers are very few yearly anyway.

Regards!

Tuukka

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 Post subject: Re: Bore size?
PostPosted: Fri Jun 10, 2011 10:54 pm 
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Silent But Deadly
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Location: miami, florida
.370-.375 is what 2 of the major players are doing. i would go with something close to that.

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 Post subject: Re: Bore size?
PostPosted: Sat Jun 11, 2011 12:42 am 
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delta9mda wrote:
.370-.375 is what 2 of the major players are doing. i would go with something close to that.



this is exactly what I would have guessed. holding a 30 caliber bullet to a 3/8ths hole looks like it fits the bill to me.

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