I'm not trying to jump on you with the following, I'm simply trying to write the truth:
This reminds me of those folks that want a javelina call and absolutely have to have one. This is even after one of the leading call manufacturers came right out and said that his Javelina call is nothing but a cottontail call with a javelina sticker on it. I've heard more than my share of both Snowshoes and jackrabbits screaming. They are both hares and both sound alike. I know, I know you've seen/heard that manufacturers make a Snow Shoehare call, but they also make a javelina call. If you absolutely need a call that says snowshoe hare then someone will slap a snowshoe hare sticker on their jackrabbit call and sell it to you. But if you want a raspy call that sounds like a Snowshoe and all you can find are Jackrabbit calls then grabb the Jackrabbit call, you'll do just fine with it.
I like the honesty of those call manufacturere that don't actually name their calls jack rabbit or cottontail. Their calls are named something like raspy or hign pitched. I have gone around and around between the higher pitched call and the raspy calls, right now I'm working with my critter calls again. The truth is that they ALL call predators because they sound like an animal in distress, simple as that. A jackrabbit call will call predators in the North Eastern USE, Africa, Austrailia and Europe just the same as it will in the American southwest.