I just finished building a 300WSM and high pressure signs are killing me. I've tried roasting RL17, H414, W760 and H380. I've even tried loads below minimum with all powders and still got hard boltlift, flattened primers and shiny half-moons from the extractor. When I pull my PTG bolt back the spent case sticks in the bolthead and won't eject. Boltface ID is .550 and my fire brass casehead is +/- .555. My headspace to my PTG go-guage is .002. The gap from bolt shoulder to barrel seat is .017. Brass neck thickness is .015 for new and third-fired brass. Reloaded brass neck measures .337. Fired brass is .344. Clearly there's plenty of neck clearance. I'm running Federal brass, Federal Mag primers and 168gr A-Max bullets. The jump to my lands is .780. I haven't tried adjusting my OAL yet. I'm an accomplished reloader and I can't figure this out. What else do I need to look at? What am I missing?