Re: reloading question
Also...be impeccable about keeping the top surface or the ram clean and free of debris--same goes for dies, die ring surface and it's mating surface on the press body. In addition, if you don't do this already, consider removing the snap ring that holds your shellholder in place. (I'd really reccomend the Redding comp shellholders as a simple and quick way to get a custom fit and still be able to zero the die to the shellholder.) Some folks then use an 0-ring to hold it in place but I make sure the bottom surface of the shellholder in contact with the ram and the top of the ram have a bit of good, lightweight lubrication and do not use the snap ring or an o-ring to hold the shellholder in place. It just floats and finds it's own "zero" in the die. My understanding is that this can help align the case more evenly side to side with the die and result in less runout. I got these ideas from Sinclair's book on precision reloading. Between these steps and neck turning, I usually average just under .001 case and bullet runout on my RCBS Rockchucker with Redding dies. Benchrest numbers on a 7/8-14 press... I check concentricity using Sinclair's guage. Good luck.
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