Just a little bit, as too much will just add work....

'Tain't set in stone and a skim bed is better than nothin'......and is often done with good results.

Bed the chamber area of the barrelat the same time, if it don't help, it's easily removed.....

Give the bottom, sides and front of the lug someclearance with a thickness of masking tape.

Rugers can be a sumbich to get right, use 2 coats of One Shot Case Lube as a release agent.......