Good points mig,
I do know it has been discussed here quite often that
classic pressure signs are really unreliable to give you
an accurate indicator of what your loads are really doing.
Sometimes you can have flattened primers and sticky bolt lift and be under Saami pressures.
I'm into my 40th year reloading now to know this is true.
I love to hot rod rounds and I've poured enough kegs of RL25 in enough brass to know the stuff can really work and give you high speed without the indicators.
Miked case are totally unreliable btw.
I look at the reloading guides and look for speed that I can match not go over.
I don't think you'll find 3,700 fps mv for a 300 WBY/150 in any of the them. No, I don't think it's because they want to be lawyer proof either.
