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seadonist

Suppressed 6.8 buffer weight?

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I am in the process of converting my CMMG MK4 5.56 to a suppressed (Dead Air Sandman S) 16” Recon barrel, 6.8 SPC Bison chamber gun. I will be using a Fail Zero BCG and the gas block is an SLR Rifleworks adjustable block. I know I will be able to utilize the gas block to adjust should I have any cycling problems but I’m wondering about the standard buffer spring/ weight that is currently in the 5.56 setup. If anyone has made a similar build, did you have to change the buffer setup in order to accommodate the heavier 6.8 rounds? Thanks

 

 

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Just wanted to give you a belated Welcome ! to the board. 

It's after midnight on the East Coast, I'm sure some guys with 6.8  experience will be around before too long.

That rifle sounds like a quality piece.  

 

I presume that Bison is a wildcat ?  I'm not up on such things.

If that is a wildcat, you should check out the "Who's at the Reloading Bench thread, if you have not already. Lot's of experience there. 

I run old school 5.56 and .308. Yeah. I know, dull. 

I wish the Pentagon would give our guys something like the 6.8, 6.5,  or something similar. 

Good luck on finishing up the conversion !

Should be a great defense gun, and deer or pig slayer, too. 

John

Edited by Retcop

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Thanks for the Welcome. I wouldn’t call the Bison chamber a wildcat but it is slightly different than the SPC II chamber in that the SPC II chamber has a free bore of .100” and the Bison chamber has a free bore of .072”

Gun will primarily be used as a hog gun out to 250-ish yards but Cavity Back Bullets is making some MKZ 120 gr projectiles that are said to be really good on white tails.


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11 minutes ago, seadonist said:

Thanks for the Welcome. I wouldn’t call the Bison chamber a wildcat but it is slightly different than the SPC II chamber in that the SPC II chamber has a free bore of .100” and the Bison chamber has a free bore of .072”

Gun will primarily be used as a hog gun out to 250-ish yards but Cavity Back Bullets is making some MKZ 120 gr projectiles that are said to be really good on white tails.


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Thanks for the info on the Bison chamber.  Learn something new every day.

Good luck, please keep us updated, and let us know how she shoots.

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Looking at the JP Silent Captured Spring system currently


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