I had a hot .45 ACP empty go down the neck of my shirt on the range. I neither moved nor even squeaked. Cleared the pistol, dropped the magazine, set it safely on the tray, then shook the shell out of my shirt.
I still have a little semi-circular scar. But I didn't let down the family!
The M14 had a remarkably high rate of fire. You couldn't anything after the first round, but the magazine emptied just the same.