I kind of agree...

by rob , Saturday, July 11, 2015, 20:11 (3427 days ago) @ mcassill

I think it's trying to extract before the pressure drops enough in the barrel to let the brass fully contract (or at least contract to an extractable size) or the chamber is a bit rough making the extractor work harder than it should to get the brass out...the extractor alone should not be the sole extraction force on the case. I think I'm gonna polish the extractor and see if that helps (one thing at a time) and then try a heavier buffer. That should delay the unlocking of bolt slightly giving the barrel gas pressures time to subside. I'm not gonna get crazy on the chamber polishing either...just some JB Bore paste or Flitz on a chamber mop and a drill to remove any surface roughness. Ultimately, I'm gonna build an entirely new upper for this rifle (lower) using an 18" mid length gas system with probably a Wilson stainless fluted .223 Wylde chambered barrel...but that's just current speculating.