{TAIL ~ A downwardly angled small pressure release hole} can be drilled into the closed end so that gasses from firing {HEAD ~ the blank} can be safely discharged 
{ TAIL ~ A downwardly angled small pressure release hole } can be drilled into the closed end so that gasses from firing { HEAD ~ the blank } can be safely discharged
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH