40 yo marlin 336. Havent shot much in the last 20 years. Not since my kids killed there first deer with it. Broke it out the safe for my grandson. Shooting factory corelokts and hornady ftx the primers are backing out. More pronounced on the hornady. Not sure if it’s always done this been so long. Had some old brass I could check but a crackhead helped himself to it a few years ago. Fyi new brass versus once fired is moving about .020. Yikes. Google says it’s not uncommon. Got some loads worked up on the fire formed brass so we’ll see. What ya’ll say.
