Why can't I find the spec for the taper crimp diameter in my reloading manuals? Is there one? Measuring different factory loads, I'm seeing .469-.472". My brass is around .472 with no crimp. I loaded a couple of rounds with it going to .470 and it puts a small burr on the lip of the case which I'm not crazy about. I can see the shiny folded over lip on the case mouth. I guess I should back it off to around .471?