Here is a close-up image of a 1911, semi-automatic .45 caliber pistol in full recoil. The photo was not planned by me so I was excited to get this action. The GoPro camera was mounted on the shooter's head and was recording the action. I shot a few frames with the still camera and this one was the coolest. The empty cartridge case is in mid-air after being ejected and the next cartridge is visible through the ejection port.
200mm lens, f/5.0 at 1/1000, ISO 800.