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Old January 2, 2019, 04:25 PM   #2
Steve in Allentown,
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Join Date: December 5, 2010
Posts: 46
More extractor goodness

Feeding

To allow the case to slide freely up under the extractor, areas "D", "G", and "F" in the picture below must be gently rounded. Just a little bit of rounding should work. If area "D" extends too far up the tensioning wall "C" the case rim may not be in solid contact with the extractor as it moves down the tensioning wall during cycling.

The whole idea with rounding these areas is to allow the case to move into position without encountering a sharp corner that could dig into it and prevent it from sliding into place.

A side benefit of rounding area "F" is that it allows the empty case to more easily rotate up as it encounters the extractor thus insuring ejection.



In the next picture you can see that the edge of the claw "B" does not touch the case anywhere. This is a perfectly fit extractor. Remove only enough material from "B" to just clear the case. Take off too much and you'll have extraction problems. If a case can be pushed back flush against the breech face, that means the nose of the extractor is not contacting the case bevel and that's a good thing. But that's all it means.

Steve in Allentown, is offline  
 
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