I just ordered my P7 from CDNN and I have one question I can't seem to find an answer to. I've read the P7 uses some type of fluting in the chamber that uses gasses to assist in the ejection of the case. One review stated this left "unique markings" on the brass but I have not found out if the brass I shoot from my P7 is going to be OK for reloading. I'm getting a reloading setup for Christmas and I've been saving up a lot of Winchester brass but I'll be bummed it my P7 chews up the brass so I can't reload it. Do you guys have idea about this?