Koshy made her international debut at the Junior meet in Germany in 2011 in which the Indian team was in sixth place. Koshy won five gold medals in
Thiruvananthapuram at the State championship in the same year. She was coached by
Haryana-based Satguru Dass from the navy. From
Kochi, she was inspired to take up the sport on seeing a pre-National shooting championship during her childhood; she said that her grandfather was a hunter. She has taken part in prone,
three-position and
air rifle events but prefers three-position. ==References==