The blank rounds can be made undersize to match {HEAD ~ the chamber dimensions} of {TAIL ~ the novel blank firing barrel} to be discussed in reference to FIGS 3A 3C, 4A 4D and 5 
of
The blank rounds can be made undersize to match { HEAD ~ the chamber dimensions } of { TAIL ~ the novel blank firing barrel } to be discussed in reference to FIGS 3A 3C , 4A 4D and 5
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH