We used to have a standing, sitting / kneeling and prone course of fire before the ground baffles. SR will be a lot better at Milo when we move it there. Yes any military's issued service rifle is accepted. We have two classes stock and open, we just dropped a vintage class this year.
My camera is a contour roam 2. Not the best quality video but it is well made and easy to mount. I used One of the mounts that came with it. I drilled some holes and used screws and nuts to attach it to the brim of my hat.