The reason that Gunsmith's Screwdrivers are so prized is that the tips are hollow-ground, not double-wedge shaped - so that torque is applied at the bottom of the screw slot where it is strongest, not the top.
The reason that Gunsmith's Screwdrivers are so prized is that the tips are hollow-ground, not double-wedge shaped - so that torque is applied at the bottom of the screw slot where it is strongest, not the top.