Originally Posted by handejector

Good question.
I had planned to put a "tech tutorial" on the old sights, but might as well go into it here.

I clamp the barrel in a set of leather vise jaws in a rather high vise. Clamp the gun more or less LEVEL and PLUMB(frame vertical). This allows one to have the screwdriver "square" with the screw just by eyeballing it.

I wear a 5X magnifyer visor.

I have a set of Craftsman jeweler's screwdrivers that I bought at Sears years ago. They are the best set I have ever seen. The shanks are the longest I have seen. They are ground VERY well. The handles, while still rather thin, are plastic, and are longer and thicker than any I have seen. They are not really large enough for a palm grip, but they allow the fingers of both hands a purchase. They have a rotating cap. While pressing the cap with an index finger, I use the thumbs and fingers of both hands to grip. They are not hollow ground, but have served me well.
Generally speaking, hollow ground gunsmithing screwdrivers are not small enough. They can, of course, be ground or filed small enough to work. However, BEAR in MIND that too much torque on these tiny screws is likely to wring it off or pop half the head off.

If the screws don't turn readily, STOP. They varnish up over the years, and get stuck. Squirt a good PENETRATING oil that is BLUE SAFE on them, and walk away. PATIENCE. If angry, frustrated, etc, on any given day, WALK AWAY. NOT a job for a preoccupied man.
Soak them as long as necessary. If one day doesn't do it, keep squirting oil for two or three days. Sometimes they move, then bind again. MORE oil and patience. It may have taken 100 years for them to get THAT stuck- don't expect to cure it in the first minute.
never had one beat me yet.