Any help would be appreciated as I'm new to long range shooting. First I have two rifles and not sure which caliber would be optimal to convert to a long range shooting system? I plan to hunt mule deer and antelope. 1. Tikka T-3 270 WSM 2. Steyr - Daimler 7X57 (with set trigger) I would like to purchase a new scope for this rifle and would like feedback on the Vortex Viper PST, Leupold or other suggestions? From an ammo perspective what manufactured bullets would you recommend for the rifle of choice? Lastly, are there any books that simplify long range shooting or gun stores in Colorado with knowledgeable staff to help out someone new to the sport? I appreciate your time and input.