Great DAT scores! It's interesting to me why you got a 3.3 gpa in your masters. What exactly does your rec and ext entail? I would say maybe if you write an amazing LOR, your rec. & ext demonstrate some passion, and your personal statement speaks.
having a Masters will automatically place you above someone with just a Bachelors. even tho a 3.3Masters isn't the greatest, you still got a shot. i would look into applying to schools that accept alot of Master degrees... just apply, cross your fingers and hope for the best.
First of all, whats the masters in? if its biology-type science, 3.3 is low. How much will it hinder your chances, I don't know, call some schools and ask to speak w/ an admission adviser