Spotted at the SHOT Show 2017 is the AimCam you can use for line of sight video capture and you can adjust it to your needs... "AimCam  is the world’s first true, line of sight video capture system. Capturing what you see, as you see it.

AimCam’s patented camera system is fully adjustable to perfectly suit your equipment requirements. From your everyday activities to sports shooting, pistol shooting, archery or any other related pursuits requiring accuracy and precision. AimCam makes it easy to capture it all."