[QUOTE=acemisser;151361]Not sure what you are asking but I can gurantee you, the factory recoil lugs are not flat. I have blanchard ground about ten of them. It usally takes .004 on one side and .010 to .015 on the other side sans the anti-rotation nub. You can take a fine flat diamond hone and gently brush the face of the action and you will see how poor the surface quality is.
Do this to the nut also and the situation is vastly improved...but not trued. remember that any defects on two mating faces will distort axial alignment due to a lack of parallelism. Bedding the lug is another thing to consider.
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