joker581

Not too many people outside of combat have occaision to use a rifle for defense so you may not get too many personal accounts.

It is worth noting though that Army and Marine Corps snipers, arguably the best in the world with a bolt rifle, are issued M-16s for defensive use. M-24s even have back up iron sights, which would allow use when the scope was damaged. This alone would allow the rifle to be used defensively if it was up to the task.