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This shows the collet that is placed around the receiver
to keep from marring the finish of the receiver. |
Indicating the receiver bore for minimum run-out. A
tight fitting mandrel is a necessity. |
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Facing the front of the receiver. The receiver
is held in the indicating collar. |
Set-up to face the receiver locking lugs. |
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Single point re-cutting the receiver threads.
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Drilling receiver to pin Holland recoil lug. |
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Indicating in bolt body. The bolt is held with
threaded ball similar to a construction ball. |
Truing the bolt locking lugs. |
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Adjusting steady rest to true bolt face. The dial indicator is to
check that the bolt body doesn't move when steady rest points are
adjusted. |
Truing bolt face. |
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| The end result of precision machining. Full contact of both locking
lugs without lapping on this receiver. If lapping, is required after
truing, it will take a very minimal lapping to make full contact with
both lugs. |
Indicating collars used for truing other actions. About the only
action I won't true is the Ruger 77 Mk II. |
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End view of indicating collar shown above.
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