Start with your shotgun unloaded. Loosen the silver screw on your quick-release bracket using the provided Allen driver. Then, position your ShotKam 3 to 10 inches from the muzzle. Align the camera straight under your barrel (USB port on the camera should be directly underneath your barrel). Firmly tighten the silver screw.
If your gun has porting holes, then attach the camera about 3 inches behind the holes to ensure debris does not land on the lens and no holes are covered by the bracket. There is no difference in the video quality between guns with porting holes and guns without.
Watch this quick 2-minute video to learn how to attach your camera to your barrel, and learn when you have to calibrate the reticle.
Now continue to the next step here: