My granddad " dry fired" his 30-06 while aiming out the upstairs bedroom window. Unfortunately, he had neglected to check the chamber first. Fortunately, he lived out in the middle of nowhere, so no harm was done other than a broken window and the lengthy stay in the doghouse imposed by grandma, who was downstairs in the kitchen at the time.

I check and double check every single time, making absolutely certain the gun is not loaded before dry fire practice.