In 1523 his father Mehmed took over the Khanate of Astrakhan and placed Gazy's brother Bakhadyr on the throne.
Mehmed's Nogai allies, fearing his growing power, killed him and Bakhadyr.
At the same time Cossacks under Kanev starost Evstafy Dashkevich raided and destroyed the fortress of Ochakov.
The Shirin Bey personally went to Istanbul and asked that Saadet be brought back to Crimea.
Howorth, writing in 1880, says that the Shirins tried to prevent a civil war by making Saadat Khan and Gazi Kalga.