Sorry for you loss. Sounds like my kinda guy, safety first. Too often people let their guard down while handeling firearms, I have seen it happen and believe me I didn't hesitate to let the offender know my feelings. Sure would hate to loose a friend due to someones stupidity. As for the person that shot your brother, he needs to stay in jail, a felon shouldn't have had a gun to begin with.
NAHC LM, Hunter & Bow Hunter Ed Instructor