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As long as the receiver and bolt faces are squared up to the barrel tenon thread axis a little misalignment is not an issue. They are repeatable from shot to shot.
More important is the receiver not twist out of good bedding contact from the barrel's torque shooting heavy bullets at high velocity in fast twist rifling. This issue was first observed in the mid 1960's with heavy bullets shot from 308 Winchester cases in rifles using Remington 700 actions. Gluing the receiver in aluminium flat bottom/side sleeves fixed this problem
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