So far hunting out West is just a dream I have, but I do subscribe to Eastman's Hunting Journal. Wolf Killer is right there is alot of good info in the MRS section. They also have a magazine devoted to bowhunting. You can subscribe to both and get both MRS sections or subscribe to one and have access to the other one online.
I just renewed my subscription for 24.99. The Dec-Jan issue of the hunting journal covers Wyoming elk. According to their schedule Feb-March will cover Montana general elk and deer. If you give them a call they can probably send you the Dec-Jan issue. Once you are a subscriber you'll have access to the MRS sections online. WWW.eastmans.com. I hope this helps!