300BlkTalk

New upper, normally run a BLK rifle, but switched to pistol after giving the rifle to son. Run wet, hand cycled it about 25 times, at first it was doing this basically every shot. Towards the bottom of the second mag, I could shoot 2 or 3 before it would jam with the fired case and the new cartridge...

Screw whatever is "supposed" to be the setting. Keep dropping until the scale says its where you want it, and then drop two or three more to confirm it. It's too important not to.