I HAVE had a .338Win. and now have 2 .340Wbys.
I am a BIG bulletfan.
The Sierra 250 GameKings will print under 1" at 100 and I have shot groups of 8" at 1000 with them.

They work quite well on game.

One thing to consider on heavys, they fight wind better. I took a caribou at 400yds in a stiff croswswind in December. The effect on the 250 was minimal compared to what a 210 or lighter would have been.

IMO,the 338WM is a terrific cartridge. derF