Hi, 

As per your score you have a fair chance of getting a government seat taking last years cutoff into consideration.

In 2018 the cutoffs of some colleges were :

-Govt medica college, jammu-442

-Sher-e-kashmir institute of medical science-440

-Govt medical college, srinagar-456

So seeing this trend you have a good scope. However the cutoff trend tends to vary every year depending on several factors like number of aspirants, difficulty of paper, highest score etc. 

I shall provide a link below for further help:

https://medicine.careers360.com/neet-college-predictor

All the best