drilling synthetic/plastic stock for sling swivel attachment

saskgunowner101

saskgunowner101

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Not really too involved of a project, just drilling a Mossberg 702 stock so I can add sling swivels. The thing I'm wondering is, how big a pilot do I need for the threads?

I have some 2 part epoxy (thanks Frontier23!) to put in the threads to lock the screws in, but how tight a tolerance would a guy need? If it was wood, I'd go slightly smaller obviously, to get a good bite into the wood.

Would too small a pilot hole = a crack in cold temperature from stressing the tupperware?? Thanks in advance.:redface:
 
Are you using the wood screw swivels? If so, I'd drill exactly the same size hole as they recommend for wood. I would apply a little lube to the screw and let it cut its own threads. I would not see any need for epoxy.

On a factory Savage plastic stock they don't use a wood type screw on the foreend. They instead use the swivel that comes with a lock nut. That would be my preference for ease of install, but I believe the wood screw type will work fine as long as its not going into a fiberglass stock, but instead a soft plastic that will deform and take threads.
 
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