Primos Hunting Calls Power Buck and Doe. Many times when you think that a buck won't respond to your grunt, it's because he can't hear you. If you bleat at him first to get his attention then grunt at him, most of the time he will respond. This call allows you to bleat and grunt using just one call. Simply exhale and inhale on the Power Buck and Doe to grunt and bleat. The Power Buck and Doe's dual-reed assembly for inhale-exhle operation produces the throaty gurnts and clicking tones of aggressive bucks and estrus bleats and cries of does. This is the perfect grunt call for any type of calling situations. It also includes a built-in compass. Primos Hunting Calls Power Buck and Doe Call. Primos Model No. 729.