OK, I can understand having such rifles as collectibles, but in the condition of the rifle in your pic, I sincerely doubt anyone could tell the difference between its present condition and another hundred rounds down the bore.
If your eyes are up to it, some of those rifles are easily capable of 1 moa or less, as far as you can see the target clearly, from the bench, of course.
I have a great load for you if you decide to shoot it
49.0 grains H414/W760, over CCI 250 magnum primers, will give you appx. 2800fps out of that barrel and very likely give you some of the best groups you've shot with open sights from a CF rifle.
If your club, puts on milsurp matches, that rifle could easily put you in the winner's circle, if you do your part.