Re: Too much powder? Beginner needs some help!!
I am not familiar w/ the 30-378 wby mag, but here is some general advice. Better safe than sorry. Just because Wby pushes their bullet faster doesn't mean the you can match these speeds. Wby may use a different powder that will produce more acceptable chamber pressures with that particular bullet. I cannot give you any reasurement on increasing your powder level. However, I generally look at the primer to tell if the powder level is too high. However, I would be vary concerned about the discrepencies in the powder levels!
I used to re-load but now I "hand-load".
-- Well, at least I try