Originally Posted by
TurnipEaterDown
Here is a Very cheap & Fast way to get the shoulder to bump back a few thousandths more than the die bottomed on the shellholder will allow -- Faster, as it requires No die part modifications:
Shellholders almost always have clearance to the rim. Use this to your advantage.
Cut a piece of paper out of a target. Trim this in width to the rim diameter in question. Somewhat round off the end of the strip of paper. When sizing, slip this piece of paper into the shellholder, and then insert the case, keeping the paper between the case head and shellholder. Resize case. You will get a few thousandths shoulder bump. The primer being forced from the case by decapping pin will punch through the paper strip.
I did this A Lot for a slightly short chamber "throw together" gun I used to have. Sure the paper compresses, and the strip has to be periodically renewed, but there isn't much of a cheaper or quicker way to do this.
If the shoulder is back enough from the chamber to make easy chambering of a round, and not excessive space, on a good bolt gun usually there isn't enough "spring" in the action compared to the elastic relaxation of the brass after firing, to make chambering a problem for a number of reloads.
Quickie fix that works often.