I've had the usual runs of nicks, scrapes, small cuts and such from cleaning, shooting, and working on my guns. Once I got a (minor) case of magnum eyebrow from shooting a .375 with a 'scope that had too-short eye relief.
And of course, in the mirror I've noticed an occasional purplish cast to my right shoulder when washing up at night after a day at the rifle range or trap field.
All in all, shooting seems to be a lot safer than skiing, roller skating, football, and many other sports.
The closest I've come to a serious injury occured when my buddy and I were at an indoor pistol range, and in the next lane he touched off his brand new .41 Magnum. A piece of bullet jacket came back, hit the tip of my nose - scratching it slightly - and bounced up off of my eye glasses.
NEVER shoot without glasses!!