Guys, I don't mean to sound contentious but I spent a goodly portion of my gunsmithing career working in busy retail outlets where I removed, quite literally, hundreds of stripped out allen head screws by driving in a Robertson or Torx bit. The only time I was unable to do this was where some guy had gotten at it with a drill bit or something and screwed up the head too badly
Burris rings seemed to be worse than any when it came to soft headed screws. GD
