I am ready to enter the long range hunting game and had some questions. First things first I want to be able to kill everything from antelope to elk out to 1000 yards. I'm thinking 7mm Rem mag or 300wm although 280ai intrigues me as well. Not sure if I should go with a factory rifle or custom/semi custom. I want to keep the rifle and scope combo under $2500. I'm sure I have left something out so let me know if you need anymore info. I really appreciate any and all help!