Call the local Scheels, Cabelas or Red Rock Sporting goods gun counter and ask about varmint rifles and optics suggestions. Steer the conversation towards an upcoming trip and ask for possible places or even if one of the guys at the counter can take you out for a day for a minimal fee. Just make sure that when you call its not around the lunch rotation or within 30min of closing time, you stand a better chance of getting a chatty dude to hang out for a bit on the phone.
If shooting in SE Montana or any of the plains areas out West, be damn sure you don't get stuck out there in the gumbo after a rain shower. Also do not make ruts on the roads and fuck everything up hot rodding around, it will be the last time most ranchers will allow you on the property. Be polite, reserved and reassure them you will close the gate, not leave ruts and you know the difference between a cow and a coyote. There are volumes of folklore about "a guy from back East" shot this or fucked something up.