I have had one like yours for about 50 years I suspect..I shoot the 200 gr. Nosler partition almost exclusively in it with a case full of old surplus 4831 for near 3000 FPS but you cannot get that with the new H4831 or IMR-4831 I don't think, but 2800 is sure reasonalbe with the new powder...

At any rate you have a dandy long range rifle that will play with the big boys any day...and with the heavy bullets just might leave them in the bar ditch.....