USAF385
US Veteran
So, did your brother have a failure to eject before firing the disastrous round?
The one time I shot reloads in a semi auto (M&P9 fs) I had a squib round. I was shooting steel and noticed I didn't hear the ringing after one round... for whatever reason I wasn't comfortable after the miss - at the distance I was shooting I was 100% on target. I noticed the slide was slightly out of battery. Sure enough it didn't extract the spent casing and when I checked, the bullet was in the barrel.
If I had simply tried to "tap and rack" I would have had an unpleasant experience for sure.
I sure feel bad for the OP.