sugarmaker
Member
It depends. Small dia high speed steel drills, standard length, like to wander, even in a drill press. It's also difficult to locate the holes relative to one another as most drill presses don't have an XY table. If the surface is the least bit rounded or angled, it's going to be hard to get a good spot. Scope bases are relatively unforgiving of mis-located, poorly threaded, or angled holes. Drilling holes in guns is actually rather hard to do well without a good setup as guns have lots of curved and irregular surfaces and the precision requirements are pretty high. It's not impossible, just be prepared for what might happen.