Funny thing - and lucky too - I was shot at with everything from a crossbow to a SAM, but the only things that left holes were .30-cal. I quit counting at a half million rounds fired at me. I never counted the holes, thinking it was superstitious.
After a short time I only paid attention to the structure around my head, but lost tract so I only counted the times I didn't have holes within 6" of my noggin. 3 times during the first tour.
They weren't using Bullberry barrels I guess.