Wow, I completed British Army infantry training in 1975 and had to qualify on the 'Charlie G'. Training money was tight back then so we all got to fire TPTP but only the 'best shots' got to fire a HEAT round. I was young, keen and stupid back then so made sure I got to fire one of the few HEAT rounds, only to realise that then 'qualified' me to carry the bastard thing on exercise. I never thought I'd beg for the GPMG (M240) as it was 'lighter'.
We used to stuff cotton wool in our ears and inside the cups of our hearing defenders. Head would still ring plus the occasional nose bleed.....
Ha. I completed mine & the bastards decided they didn't want to risk the precious toys being damaged on ex. So I got a star picket driver & two rifle slings: no diff since there were no 84mm blank rounds, right? Still had to carry an L1A1.