I have an American rifle company nucleus action chambered in 6br with manners stock and primal instinct magazine adapter. The gun feeds and shoots well but it often leaves the empty case in the action. Is this common to all calibers in this action or is it that a mechanical ejector with the short fat 6br case is a bad combination. Do all mechanical ejectors like kelblys atlas tactical and bighorn tl3 do the same thing with the short fat case? I’ve been tempted to go to one of them. I have some dummy rounds loaded and they eject way better with the weight of the bullet.