Elk elevation along the eastern slopes

[Buck_Hunter]

Hey folks,

Am a rookie elk hunter planning my first serious rifle elk hunt for mid - end of September. I am planning on hunting the eastern slopes, from 0 - 5km from the BC/Alberta border. I have had hunters tell me that they have continuously shot elk at a certain elevation and that I should focus on being at a certain elevation when hunting elk in the type of area I am going into and I wanted to confirm that here on AO. Can anyone comment on this? Should I be planning my hunt to focus on finding elk within a certain elevation range? and if so, what is that elevation?! Thanks!