I have the RCBS Case Master and honestly I think this stuff is hard to get repeatable data. For example I went down and measured runout on new 223Rem brass. Three of the brass had like .005ish run out and one had .004. Is this typical of new brass? Instructions say to resize and see if this helps. But when you shoot the ammunition and resize it seems possible to introduce all kinds of runout. I am not a benchrest shooter but like my ammo to be less than 1" for BG hunting rifles but for varmint rifles I like a bit less. I think you can obtain these accuracy by the components used. So should I try resizing one of my brass and see if this lessen the run out?
I think someone a while ago mention that RCBS Case Master is the worse of all concentriity gauge. Is this the general consensus?
I have a loaded round and I will try to measure bullet run out but I think the first thing is to probably get the smallest run out on a new brass and then load and see what bullet run out I get.
