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Old 12-06-2017, 03:12 PM   #37
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Originally Posted by GTR View Post
To the point “Using the carrier and action return spring assembly during headspace to apply force.“

The Polish firm of WBP Rogow headspace verification procedure.

See 1:57. in this video link.

For the above procedure to yield consistent results the barrel hardness value and the gauge hardness values are varified and within specs.

What is unknown in the above procedure: The value (length, coil dia, etc.) of the action return spring. Test spring vs actual action return spring.

Approved headspace verification is covered in the armour’s manual.
In the early build he is using a test carrier. Later in the video around 5:20 you see him using the finished matching carrier and testing is done with only hand pressure, no spring in the carrier. It is easy to see the carrier closing on the Go and not on the no go.
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