Barrel bushing clearance

For most guns that will be fine.

I prefer the EGW angle bore bushings these days, they are already relieved for linkdown and fit up nicely. Their 'prefit' bushing is just about dead on the money for a slide and barrel that were made to the correct sizes. In an STI slide they have about 2 or 3 thou that has to be taken off to fit but that allows me to fit them essentially size on size.