I can only imagine that the charger clip, thumb cut out was never intended also to function as the ejector of empty cases, but that is just what happens when the bolt raceway is interrupted with this charger clip, thump cut out, that just changes the direction of an extracted empty case, when being pulled out from the chamber. Wondering in the designers of that charger clip, thumb cut out, on the SMLE # 4, had any knowledge of this double function of their design ?