i know that with so many variables between different rifles and components, its impossible for many rules to stretch across the board but all of what you guys have said is along the lines with my current understanding.
I use RCBS dies and i have always adjusted them as the factory instructions direct which in RCBS is to set the die down until the press just does cam over-with the ram up, touch it with the die then 1/4 turn further down. What i am not completely sure of is that with the neck die, is it still possible to push back or bulge the shoulder?
I have triple checked my seating depth when compared to my chamber length (to the lands) and im pretty sure that im not seating too long but i cant figure out why i have a hard time chambering some of the cases. I trim every time so i know its not the case length. The cases extract fine. Any ideas?