My food for thought...
If you get the oppurtunity of an interview with a particular company spend some time getting to know what aircraft they operate, how many of that type in the fleet, the local aerodromes that they regularly fly to etc.
Lets face it - if you have 300 hours your probably at the bottom of a pile of resume's.
You need to sell the idea of why your better than the next guy! I have given guys a go whom may have no experience but demonstrate the fight not to leave that interview without a job - but can at least hold their own knowing a bit about our company!
You can teach any monkey to fly... But you cant teach a monkey how to deal with customers when the going gets tough, weather closing in, last light, over weight etc. Being the right person with the right attitude is worth more than having the right amount of hours.. on most occasions (small GA)!
good luck!