I have a 629 that is tapped for the old leupold base which is different than the factory drilling. Does anyone make a weaver style or pica tinny that will replace the leupold base? I am planning to add a burris FF3 for hogs.

I think Brownells sells blank bases that could be custom drilled for your application.....or you could use the old base as a template for marking/drilling the new blank one.

I'm not aware of any that would directly replace the old one, but you could contact Leupold. They may have one, or know of a vendor who makes them.

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Ret. LE, FA Instr, S&W Armorer