Re: What gun for grizzly? what do guides use ?
.338 wm & .375 H&H are very popular with guides up here. It's difficult to be overgunned for griz, it's not so difficult for the hunter to be overgunned. You should carry the biggest caliber you can shoot well and have confidence in. Heavier premium bullets are better for deeper penetration. Some guides prefer a barrel of about 20" for close in work and in the alder thickets. The .30-06 with 200 gr. Nosler PTN's will get the job done but I prefer to think of the .338 wm as a practical minimum. The .338-06 or .35 Whelen would be fine.
Good Hunting, Festus
"Fenced yards ain't hole cards and like as not never will be, reason for rhymers and old five and dimers like me."