Band pass filter unstable and lower gain than simulation
I'm not quite sure what issues you're having with your specific driver circuit, but I do have a question for you: why use an opamp ($4?!) for this? Murata has an application paper out on piezo devices (I assume you're driving a piezo) and they recommend a simple BJT driving a resistor in parallel with the piezo. See page 4:

http://www.murata.com/~/media/webrenewal/support/library/catalog/products/sound/p15e.ashx

Separate your project into pieces. Get your driver in order first, working like you would expect, and then focus on receiving and filtering.