Something new to me. Bought a used, clean 700 in 22-250. Working up a load for it. Started with new federal gold medal brass. Tried my first batch of reloads. No pressure signs which I expected due to moderate start point. Went back to bench to make some changes. Was checking fired cases and noticed spiral marks on main body of case. Sorta looks like something fired from a h&k with the fluted chamber. This is not just burnt powder marks it's not colored at all. These are faint brass spiral distortions. I can just barely feel them with a finger nail. Extraction was ok on the fired cases, no other concerns other than brass life. I have not tried running these threw the dies yet. Any thoughts or concerns? Only thing I can come up with is a crappy chamber cutting job, but does it really matter? Thanks red dog