I will definetly second EKM' s advice on starting with a lot of power for a 500 yard shot at an elk. I would never advise anyone to use a 270 on a 500 yard shot at an elk. The 270 is definetly not the " ultimate elk rifle" but it is a very capable elk rifle when it is used within it' s limitations. I use one cause any shot that I will be able to take in my hinting area would be within the 270' s capabilites.

I didn' t want to imply that you are not proficent with your shooting abilites and hope it didn' t come out that way I just wanted to state that is a long shot and anyone attempting shots that far should definetly know their rifle and how it performes.