As many of you know, I'm an avid 'coon hunter. I've been looking for a way to video my shots and I figured out a way to do it.
I modified a 1" rimfire scope ring by drilling it to accept a 1/4 - 20 threaded rod. I mounted the ring to the barrel of the scope, just ahead of the forward mount. The camera is threaded onto the stud and a wing nut is snugged against the bottom of the camera to keep it centered and locked down.
With this arrangement, I can not only shoot stills, I can video the shot by illuminating it with the 185 lumen spot beam halogen light attached to the underside of the barrel. The barrel, scope, light and camera are all on axis.
After I completed the installation, I took it outside and tested it by doing a short 30 second video. It works perfectly. Below is a photo of the rifle, light and camera.