Great advice here- inside a house or vehicle does change how you sound. Recording outside will give you a great comparison.Hopefully what you take from these posts is learn to make realistic elk sounds from which ever call you choose. A herd makes many different sounds all at once, cows and calves. Practice outside as they all sound different in your truck. Record your calls then compare them to actual recordings of elk. Listen and mimic.
I like cow girl's too..I take nothing but a Cow Girl now. I can sound like a screaming spike to a calf looking for momma. Call at and away and mix it up. You sound different enough to get in pretty close. To qualify I am a rifle hunter, so close to me is 50-100yds.
I had a boss in the store where I worked who would practice cow calling and bugling in our office. You could hear the muted calls all over the store. People thought he was crazy but I thought it was great. I never had a problem getting time off for hunting.Great advice here- inside a house or vehicle does change how you sound. Recording outside will give you a great comparison.