I am very new to this long range game! I am looking to build a long range elk hunting rifle for canyon to canyon shots or long high plains desert shots. I currently own a Remington 700 Police 300RUM. What does it require to change to a 338 Edge? Is it possible? How long of a barrel should I get? What kind of break? What twist? What should I expect the whole conversion to cost? I am open minded and any suggestions would be appreciated. Are there other calibers I should be considering? What would I gain by changing to a 338 edge? Are there any stock suggestions(currently have HS Precision Stock). Again, I am a novice and am looking for all the knowledge that I can! Thanks again for all you advice!