Home Forums Reloading Big Game Rifles What am I doing wrong?

A while back I made some 30/375 brass from 375 Ruger brass. Here is what worked for me:

375 Ruger FL die without expander
338 RCM seater die
338 RCM FL die without sizer ball
300 RCM seater die
300 RCM FL sizer with sizer ball

Perhaps you would substitute the 30 newton for the 300 RCM dies?
Use 30 Newton seater first then the 30 Newton FL die.

(The RCM cartridges share the same shoulder angle and shoulder diameter as the 375 Ruger.)


Hope this helps