ok so i have a sage ebr dont matter what i do it short strokes, wont load next bullet into chamber, sometimes it does fine. Say out of twenty shots 10 dont load. tried 3 different barrelled action in that run fine in a usgi stock, or new norinco stock, tried us mags twenty different norinco mags some pinned some followers, everything works flawlessly in the normal stocks, tried different ammo. tilt test works, clean gas piston and chamber, but no luck someone please help me