One word of caution, one of the Western states - ID, maybe?? - prohibits using a rangefinder/ballistic calc combo like the Sig BDX series. I'm going off memory, so if you're considering a rangefinder with that functionality I recommend digging around a bit to confirm.
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https://idfg.idaho.gov/question/are-laser-range-rifle-scopes-legal-idaho-big-game-hunting
And this is from a Wyoming Game and Fish white paper.
Idaho
Idaho does regulate long range shooting/hunting. The topic comes up occasionally, but there are no plans to address it further. See regulation below:
language. Colorado, thus far, has tried to use education to address this ethical issue.
Idaho Administrative Code
IDAPA 13.01.08 Rules Governing the Taking of Big Game Animals in the State of Idaho
410. UNLAWFUL METHODS OF TAKE
No person shall take big game animals as outlined in this section. (7-1-93)
01. Firearms. (7-1-93)
a. With any firearm that, in combination with a scope, sling, and/or any other attachments,
weighs more than sixteen (16) pounds. (7-1-93)
b. With any shotgun using any shot smaller than double-aught (#00) buck. (7-1-93)
c. With any rimfire rifle, rimfire handgun or any muzzleloading handgun, EXCEPT for mountain
lion and trapped gray wolf. (4-4-13)
d. With a fully automatic firearm. (10-26-94)
e. With any electronic device attached to, or incorporated in, the firearm (including handguns and shotguns) or scope; except scopes containing battery powered or tritium lighted reticles are
allowed. (4-2-08)
I only just skimmed over it but you can read the whole thing here.