I would go with 8.5 to 9 lbs on a 9.3x62..I also like a 26 inch barrel with a long magazine and a long throat..I get 2553 FPS with a 286 Nosler and 2413 FPS with a 320 gr. Woodleigh with nice pressure that way..That puts it in the .375 class and I cannot tell any difference in killing power on buffalo with it or my 375 H&H with the heavy bullets..The short tube doesn't work well with the 320 gr. Woodleighs on buffalo according to a good frind and well known PH..for what its worth.