Hi Everyone, Long time listener, first time caller here... and in need of your advice/expertise. I am ready to purchase a new Mule Deer/Aoudad/Elk rifle. I do the majority of my hunting in the mountains of southwest Texas and Montana. Days consist of a lot of steep climbs and constantly being on the move so I am looking to keep it light. Shots can be anywhere from 50-600 yards. Could potentially go longer but i don't feel that competent yet, I wont pull the trigger and just "hope" it makes contact. All in (gun, scope, bipod etc..) I would like to keep it at $4,000 and under. Here are my questions: Should I go with an upgraded production rifle or custom rifle? 7mm Rem Mag or 300 Win Mag? I don't know anything about Short mags like 300wsm. How do they compare? If I went custom where should I look? For production: I do like the Sako Finnlight in .300 Win Mag, I could upgrade that gun with a McMillan stock. For scopes: Zeiss, Nightforce, Meopta or Swarovski Honestly, I have really enjoyed the learning process researching this gun but I am ready to make a decision. I could read various articles and review forever. Thanks in advance for your help!