Hello aspirant. Congratulations on your result.
with a score of 503, you might not be able to get a government seat as the rank inflation this year is almost the same as last year. Last year cut off rank is 34613 as stated on the site of KMC Mangalore. However, you can get admission in other good private medical colleges such as JSS medical college and Sri Devraj Medical college. Please feel free to contact for any other queries! All the best!