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Posted: 12/27/2005 1:36:21 PM EDT
[Last Edit: 12/27/2005 1:37:19 PM EDT by AtlantaFireman]
I bought a used "20" Bushmaster Heavy Service Rifle" barrel: stainless, 1:8 twist, unknown chamber (.223, 5.56, or Wylde). I checked headspace with my DPMS bolt, that I am hoping to use.

Bolt closes on a NOGO gauge, but does not close (by a long shot) on a FIELD gauge.

Safe to proceed with this barrel or not? What can I expect?
Link Posted: 12/27/2005 5:49:27 PM EDT
Good to go.
Link Posted: 12/27/2005 5:52:52 PM EDT
Your good to go. I had to toss my nogo guage and went with an individual micro'd set from Brownells.
Link Posted: 12/27/2005 8:38:18 PM EDT
From what I read, all the military uses is a field.
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