Want to throw this issue out for comment. I have a .308 Remington 700 SPS Tactical that I've been shooting for about a year and a half now. I load all my own ammo and have had absolutely no problems with anything I've ever fired through it. Recently, I was given a box of 150gn Magtech FMJ and have had a problem with them. Every time I fire a round of the Magtech ammo, the case sticks in the chamber. I have to smack the bolt handle with heal of my hand several times to get the case out. The bolt handle lifts OK, but it just won't extract the case. There's no obvious signs of over-pressure. I've measured the empty cases and they all measure within a couple of thousands of spec. All my rounds after that worked just fine. I'm stumped, but interested in anything anyone has to offer on the subject.