There is a video on You Tube of a M98 500 jeffery with a detachable box magasine[no ''sed''on this laptop] shown feeding and ejecting ,it is under poster Johan Greyling ,i thought this was interesting, considering the whys and wherefores of trying to get 500 Jefferys to FEED ,[seemingly some gunsmiths can do it, others cannot ] there is also another You Tube video of a rough looking M98 feeding, under poster Daniel Moratal.