Weaver 3-10x40 Grand Slam scope fogged on me. Sent it to Weaver for their "Lifetime Warranty". They said the warranty was void due to excessive use!

I've also had one primer fail to fire.

Had my Browning A-bolt coyote rifle get light primer strikes in extreme cold. A thorough cleaning resolved it.

My father took a bad fall and broke the stock on his Mk V at the wrist on a sheep hunt in Idaho's Big Horn Crags. He kept hunting and found a nice ram and took a shot with his pistol gripped 300. He missed.