I've only been into reloading for about a year now, but up to this point I have only used brass that was factory loaded and fired in my rifle. I recently purchased a couple bags of winchester brass from Sportsmans and have started to develop a few loads with it. To this point I have only fired 12 rounds of this new brass for pressure testing so the next step is to start loading and checking for accuracy but I have a question that I've never seen covered in any of my reloading manuals...
Will I see differences in accuracy and/or overpressure between new and fired brass? I use a full length die but run it up so it only sets the shoulder back a few thousandths, or more if I'm not having bolt lift problems.
I can't imagine the new cases shooting as well as fired cases due to the change in volume once the case is fire formed to my rifles chamber but thought I would ask here before sending any more one dollar bullets down range.
How do you guys handle this situation?