Tried it at MOA, for a half slide tha thing weights like a regular Glock full slide. Return spring is on the weak side, could be the reason why it could cycle so many times.
But dry firing always consume less gas than firing a BB so I think you'd get 2/3 of the shots with BBs.
But dry firing always consume less gas than firing a BB so I think you'd get 2/3 of the shots with BBs.