Gregg- first if you have not already tried the diaphram calls with the dome on them- like the primos- try those first- they work really well for me; it has to do with the shape of the roof of your mouth.
Second - I can look outside right now and see elk; I hear them at night; I listen to them year round.
When the bulls are in rut; they kinda get stupid; and they will even respond to the sreech of bad brakes on a car.
If your trying to immitate the bugle of a bull; then keep in mind that the ability to make a high note and make it with volume- outweighs the perfect bugle; its just that high pitch that rattles them into returning a bugle.
There are a lot of bugles out there that work fine; you should use one with a reed built in- and even if you perfect the diaphram call- you should have a call that is consistant and easy...
Because when you run uphill and down and get all out of breath and nervous; dry mouthed and knock-kneed you should have an easy to operate call.
Now- with cow calls- I have tried nearly all of them; and in the fall; where the cows are starting to group up and mix with other herds; and there are young elk mewing and spikes talking with a broken voice- you can fool the old cows and the bulls- with most any call-
You need to know what you are saying in elk talk; as one thing means "I am a lost calf" another "I am a big cow; get over here" or " I am ready for you big boy".
Most guys get in close to a herd of elk; use a lost calf call; get a cow in to investigate; and then bugle or just as important if not more- use a branch to imitate a bull raking a tree or the gound- as they do both.. or even pushing on a small tree that produces the swishing noise of a bull pushing on a tree in anger.
Now I can tell you that in the winter; where I am seeing small herds of a dozen elk; any cow call gets their ears perked up; but when they get into big groups of 200 or more- they seem to know who talks what way.
I can watch them with binoculars and use a cow call and they often will all stand up and take off at a trot. Same call in the fall - brings them in.
The ONLY call that I have used in the winter fall spring and summer that does not alert them; and that they accept as another elk- is the little grey folded up plastic with a rubber band cow call by ELK INC.
I don't know why; but any time of year it just does not spook them- and even if you make a stupid sound out of it; they seem to be ok with it.
Watch some Primos tapes on elk hunting. You will see that they locate a bull with a bugle or a cow call; the shooter then gets ahead towards the bull very fast; and the callers set up 40 to 100 yards behind- and you will discover that is the best way to do it!!!
The other way - if your hunting alone- is to set up an elk decoy; and then get ahead of it towards the bull and call until the bull starts heading to the decoy- and hopefully past you.
Its not all about the calling; its about knowing how they think; and the bulls don't always want to get into a fight with an unknown bull- they will most often stop at 40 or 50 yards or further and try to see the bull that is calling; or the cow that is calling.
Personally I use the primos dome type diaphram call; carry two hoochie momma calls; and an elk inc call. You can really make different noises and get some positive attention that way- but sometimes just a soft mew is all you need.
Like I say- if you haven't tried the high domed diaphram calls- do so; and if your bugling- remember not to practice around loved ones- they will eventually evolve your call from a LOUD bugle to a bugle that sounds like a bull two miles away- which rarely interests any bull at any time of the year...
There is an online place- or was- where there are different elk vocalizations to hear- if I can find the link or if someone else knows where it is - could you put the link up?
Let us know how things are progressing Gregg.