trimming

[dakotah]

If you are talking .005" --- then I agree with you Rev. Don't see how that could make much difference. But then I don't shoot bench rest and I am not a fanatic like some of those guys I have met. I confess that although I used to be very careful regarding I fired brass I will sometimes mix brass that I have fired two times after trimming with brass that I have fired once or even three times. So the variation on my hunting loads is there. To complicate things, I don't use a precision instrument to inside or outside de-burr my brass thereby introducing further variations. And most of my rifles do not have custom chambers, though some do.

For an experiment: Take a case you have trimmed measure the case length and fire it in full power load and remeasure the case length.