Hey guys: the bolt is no big deal at all, and to pin a bolt is to destroy something that was original. Real simple:- with the bolt in the receiver, pull it back to the bolt-stop. Look at it from the top (different from the front) if you can see the gas vent hole pointing straight up to where Sir Charles apparently is these days, you're good to go. Stuart Mowbray recently published and outstanding book on dismantling surplus rifles, and there's a Ross in there, with excellent progressive instructions and photos. Buy a copy, please.