In terms of princely hierarchy in colonial India, the status of Mysore was of a

At that time there were three Princely States that were given 21 gun salutes. The rulers of the five premier states - Hyderabad State, Mysore, Baroda, Jammu & Kashmir, and Gwalior -received 21-gun salutes.
In 1917, the Maharaja Scindia of Gwalior was upgraded to a permanent and hereditary 21-gun salute, and the Maharaja of Jammu and Kashmir was granted the same in 1921. Both were granted the increased ranks as a result of the meritorious services of their soldiers in the First World War.