Getting consistency among your reloads is key for accuracy and dependability if done right. Using the "feel method" is alway going to be less consistent than a comparator. There isnt a neuro-sugeon in the world who can "feel" .002 difference when closing a bolt. So its always best to use a tool capable of measuring down to the thousandth of an inch to compare your fired case to a resized case. Achieving a true -.0015 to -.002 will yeild the best results for most and there is just no way to do this consistently using the "feel method" .