That bullet is designed for the little .35 Remington and will be too soft for max loads in the Whelen. The round nosed shape will also hurt long range performance. Better to use the Remington 200-grain pointed CoreLokt, the Hornady 200 spire point, the Speer 220 fp, etc. These bullets will perform better an any range and are well suited to use on deer and black bear.
My M7600 is in .338-06 and I get 1.5 moa for five-shot groups with hunting loads. Accuracy loads will do a bit better. All are ample for a big game hunting rifle.