I'm going to be using a Wyatt's extended mag box so no issues with length.
I can't set the base of the bullet to the shoulder neck intersection because the neck on a 300 WM is smaller than the diameter of the bullet. It's approximately .2683". Short of the .308" theoretical min amount in the case.
I also know I need to leave some room for throat erosion.
Another issue that I know of is that as a case nears max charge , generally speaking, accuracy increases.
The issue I don't want to deal with is having to fill the case so full, for accuracy, that brass life and shooting comfort suffer. Also with that barrel life will suffer.
I'm looking for a happy medium and before I choose the middle I wanted to get some thoughts from folks that have been there and done that.
Thanks
Tom