Bore Gauge to check Concentricity - Thanks for the Advice!!

dreadpirate · Aug 15, 2017

Thanks for recommending a bore gauge to check concentricity (https://www.mdshooters.com/showthread.php?t=213366)

I had a o-ring between the rifle and extension, and that o-ring threw off the centering just a hair - but was noticeable. Much better without it. Better safe than baffle strike!

Gcs7th · Aug 15, 2017

Yes there's several threads out here that state a suppressor or qd mount for a suppressor should be mounted to the shoulder of the barrel. Never use a crush washer for that reason. If timing is required use peel washers or similar.

Were you able to get a rod down your barrel to check for concentricity?

dreadpirate · Aug 16, 2017

Gcs7th said:
Yes there's several threads out here that state a suppressor or qd mount for a suppressor should be mounted to the shoulder of the barrel. Never use a crush washer for that reason. If timing is required use peel washers or similar.

Were you able to get a rod down your barrel to check for concentricity?

Yes - but this was not a crush washer - this was a rubber o-ring.

Yes the can, extension, and barrel gauged true.

Bore Gauge to check Concentricity - Thanks for the Advice!!

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