My swim team once played paintball years ago with single shot pistols. Headshots didn't count as kills. Paul, a senior on the team, pegs Coach in the ear. While Coach is writhing in pain on the ground, Paul reloads, walks up and says, "Sorry Coach. That first one doesn't count." Then shoots him point blank in the ass. ROTFL
It looks to me like the guns you see in the stores today are not as powerful as those pistols were. The sport got safer when it went more mainstream. Maybe I'm wrong.