I'm a CO resident and if I could only keep one rifle it would be my 300 win. I was running a Bergara B14, and now I'm running a Weatherby Vanguard, the Meateater edition, but a Vanguard is a Vanguard. Decent rifle. With the wonderful variety of bullets available now you can run the perfect ammo for any situation, from close range still hunting elk in the lodgepole to long, windy shots on the antelope plains. But like other's have said, make sure you can shoot it. Lots of people are pretty recoil sensitive and won't admit it. More elk are killed around here (on the Front Range of CO) with .270s and .308s, so there's that. Good luck,