First try getting it out with an impact hammer. That can often break out the corrosion.Do you have a "go to" bit you like to use to drill out old screws? Is it carbide-tipped? Do you use a Dremel or drill?
First try getting it out with an impact hammer. That can often break out the corrosion.
A left handed drill bit along with a bolt extractor bit works very well.
If you are drilling into stainless screws then you want carbide bits. You also want a slower drilling speed with lots of pressure. If you aren't making a chip with every turn of the bit then you are work hardening the stainless and will dull your drill bit.