I stay in Jamestown ND now but I lived the first 52 years of my life north of Wall SD. I still have a small farm out there where I hunt. I got one anterless tag filled there last week and have to go back for my any deer tag soon. I have a muzzle loader tag as well and that starts Dec 13 through Jan 31. I hunted for a few years with a 300 win mag out there. It is really much more gun than you need however if thats you cup of tea I would go with any good 180 grain bullet. I prefer the Nosler Partition put any good bullet will work. Shots on Black Hills elk are generally not long with most guys useing a 30-06 and 270. I plan on retiring back there. Its a fine place to live. What do you do? I am Retired but my wife has several years to go. Good luck hunting.