I'm totally new to hunting with a rifle (not legal in my part of Iowa other than fur-bearers.) A friend can get me a Rem. Model 7, .260 that is over 5 yrs old but still new in box from a friend of his that just has never used it. It has a laminated stock and blued barrel. What would this gun be worth, and more importantly, would it be a good choice of caliber for my upcoming antelope hunt with my daughters and for a future mule deer hunt? Thanks for any advise!!