L Cazador Report post Posted September 11, 2016 Case length has nothing to do with bumping the shoulder. Are you using a RCBS shell holder with your RCBS die? Like I said you may need to make your own shell holder height for this rifle. Share this post Link to post Share on other sites
WampusCat Report post Posted September 11, 2016 I believe he was responding to my question regarding length before and after firing when measured from the shoulder datum to the base in which case it is important. Share this post Link to post Share on other sites
