Try a new BCG!
If the head space and gas tube is ok and no leaks, then your extractor and timing is an issue. Your machine is under gassed right now. What worked for me with same problem was I bought a new Young NM BCG! The original bcg i had - had a small gas leak issue that no one detected not even the mfg. they shoot 5.56 so the gas increase compensated for the small loss and did not detect an issue at the factory. Also, put the o-ring back in the extractor as it has a better grip on the casing when used. It is your BCG as long as your gas system is ok. Once you change the bcg you will find your system is over gassed now so go with an H2 buffer with your new bcg and watch the cycle and where your round eject. A 3:30 eject is perfect. Overgassed will eject forward and undergassed will eject way back. Buy a new one and return the bad one! I guarantee this will work and you will be able to shoot anything as it should be! You are probably losing gas due to poor BCG and every once in awhile even the best mfg have some issues.
Last edited by American2013; 07-06-13 at 12:42.
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