I used an RCBS Collet style bullet puller to pull 100 rounds of 7MM Rem Mag cartridges. The RCBS puller worked fine so I plan to salvage the bullets and powder to reload with a few grains less powder. Is it necessary to remove the decamping pin and resize my brass that was full length resized prior to my original loads. I was surprised that some cases were so easy to pull and others required a heavy tightening of the collet and forceful tugg to remove them. I can tell that the neck tension of my cases is all over the place. Should I remove the decamping pin and resize before reloading?