Lithgow No1 Mk3 sticky extraction.

[CINDERS]

Had a look close up and its lint casting a shadow on the feed ramp but those brass chips are everywhere is the underside of the mags front feed lips smooth with no sharp bits that will scrape the side of the case as it is stripped. Also is the flat spring fitted on the front of the mag this sits in-front of the follower on the magazine body (Spring Auxillary "B") that would leave a sharp edge of the mag box that may scrape the cases