Suggestion: figure out what torque is appropriate and use a torque wrench and some light duty thread adhesive.
Make sure you understand the differences between wet and dry torque. Sounds as if the action screw was overtorqued at some point. Better to have the action screw shear off instead of stripping the threads in the receiver.
For more information on wet and dry torque, take a look at this thread.
http://forum.pafoa.org/gunsmithing-4...ml#post1590991
All the best,
Thomae
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