Issues with drill/tap shotgun?

[fullstrut]

Has anyone ever drilled and tapped a shotgun and had issues with it?

Looking to do my Winchester SX4, Winchester is not recommending it due to the type of metal in the receiver being weaker and my gunsmith say it won’t be a problem.

 

[Slickhill]

Never done an SX4, I’m assuming it’s aluminum is probably why they aren’t recommending it be D&T, that and they don’t offer it I assume.

But I have done a ton of 870s, 500s, some Benellis, and Berettas. No problems if done correctly like any other D&T job.

I would insist that whoever does it does so on a Milling machine, only one chance to get it right so not the place for a drill press IMO. Probably calls for 8/40 screws and a dab of Loctite on each.