Re: Stripped Scope Mount screws
Here's what I've done in the past.
Can of Kroil and a hot air gun. cook it still it's billowing white smoke and stinking up your shop really good. then use a torx bit and (bit only, not a screw driver) give it a couple good firm whacks with a ball peen so that the tip of the bit really bites down good at the base of the screw head. Keep pressure on it and attempt to slowly turn it out.
Sometimes you get just enough purchase to back the screw out of the hole. Doesn't always work, but I've had pretty good luck with it.
If that fails turning the head into a slot with a dremel is usually my next step but more than likely it'll sacrifice the scope base in the process.