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