This is a general question about the ways you have nicked, dinged, bent, cracked, rusted, or broken your shotgun. The goal is to help others not repeat our mistakes.
How did it happen?
What was broken or damaged?
How did you get over it?
I'll go first, all of my significant damage has come while cleaning the guns or while extracting them from the gun safe. Once by shotgun slid while resting on the end of the table during cleaning and hit a metal chair putting a nice dent in the fore-end wood. I spent the next several hours ironing and steaming the dent and eventually got it mostly out.
Another time I was pulling a cleaning patch through the barrel vigorously and when it came free from the barrel, and the next thing I knew the barrel and gun rest were flying through the air to the ground. This put a couple of nice dings in the rib and a chip in my floor. I cold blued the gouges, but could do nothing about the dings.