Here is how to adjust the resizing die to full length resize cases. First, run the ram to the top of the reloading press stroke with the proper shell holder installed. Second, screw the resizing die into the press until it stops against the elevated shell holder. Third, all play must be removed from the system. To do this, lower the ram and turn the die 1/8 to 1/4 turn farther into the press. Check the adjustment by returning the shell holder to the top of its stroke––you should feel the press cam over center. Now set the large lock ring and your die is adjusted to properly full length resize cases.

…....Case lengthening produced by repeated full length resizing will shorten case life. Continuous working of the brass between chamber and die stretches it, eventually producing cracks in the case and finally complete head separation. Hot loads, even if necks are trimmed as called for, speed up this process.

If optimum accuracy and prolonged case life are important to the reloader, our advice is to neck size alone whenever practical. There are of course, situations in which it is advisable to full length resize. Shooters reloading for pumps, lever-actions, and autoloaders must do so to facilitate reliable chambering. A lever-action, for example, doesn't have the powerful camming action of a bolt action and may not easily chamber cases larger than factory standards. Shooters who reload cases from one bolt action for another will also find it necessary to full length resize. Even shooters reloading for one bolt action will occasionally need to full length resize for the sake of easy clearance; over repeated firings the case may conform more and more tightly to chamber dimensions, making chambering and extraction increasingly difficult.