This foto is just an example, not my work. I used to bed just pillars first and then, after they are settled down in correct place, mill 2-3 mm wood away from bedding area and then, att lastly, add the mass, usually Acraglass.
I just checked my old MS. It's rear screw pillar (=ferrule) is in correct lenght. I´m not sure but I have idea that trigger assemblys dimensions have changed a little from earlier pre-WW1 models to later ones. So question is: Does yours rifle have correct period assembly ?