I have appearently seen the rifle but now it can't be opulled up any more. Memory not all it used to be. If that was an L61R then the machining in the reciever is for mounting a scope. I don't remember if Sako ring's came with it or not but I'd think they did. They were the best factory rifle's I've ever owned. At that time they were owned bu the Finish Red Cross. it was transfered to them during WWII to keep it away from the Natzi's is the story I heard.
If you're lucky enough to be on private land and can leave your stand up during the off season you can tie an old piece of cloth or something of the sort to your stand. I like to use an old camo bandana that I have. That way the deer get used to the movement and eventually don't bother even looking up when there is slight movement. This may just give you the time to draw your bow or raise your gun without being detected.