At school we had bulleted blank for our Brens; no aiming at any one and no one closer than 30 yards.
At my establishmant in Kenya (the Patch), there were a few instances of 'minor injuries' caused by bulleted blanks - normally these were deliberate acts
PZU - Out of Africa (Retired)
It was also frequently alleged that the KP GSU used hem in 'Riot Control'