BoydAllen
Gold $$ Contributor
If your rifle has an ejector, figure out a way to end up with a fired case that has not had its neck distorted as it came out of the rifle. If your rifle does not have a spring plunger ejector you shouldn't have a problem. Carefully measure the runout of the case (This and all subsequent measurements to be at the end of the case neck.), and then size the case with either a body die or your bushing FL die with no bushing in the die. Bump the shoulder as you normally would. Then, measure the runout the same way as you did the fired case, and tell us the difference in the two figures. After that measure some sized cases (with bushing in die) that you have done using normal ejection (if your rifle has a spring plunger ejector, and tell us what any difference is between those and the ones that you just sized the body's of. Finally, taking the same care with ejection if needed, pull the decapping/expanding assembly from a one piece FL die, size a case, measure and report its runout, and how that compares with the average from a bushing FL die. There are a few points to be made here, but first let us gather data.
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