I know this is done in India. I have had some responses to cow elk chirping but have not gotten the bulls to call back except late at night mouth calling, a couple Axis beers helps with this. On the internet the only results are someone wanting to sell some product or magic call. I want to try tuning an elk bugle for the axis bark and three note call but not sure where to start. Has any one done this successfully?

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli