Hi alextaylor116,
To start, the overall GMAT score is in 10-point increments, so you can't end up with a 707 or 726. As such, I'll assume you mean that your goals are 710/730.
GMAC has publicly stated that the Official Score that you earn on Test Day is within +/-30 points of actual ability. Assuming a similar 'swing' in how your CATs function, your CAT score results show that you're relatively close to your goals. At higher and higher scoring levels, the GMAT becomes really 'sensitive' to little mistakes - if you make too many, then there will be a limit to how high you can score. When reviewing each CAT, it's important to try define WHY you got questions wrong. How many questions did you get wrong....
1) Because of a silly/little mistake?
2) Because there was some math/verbal that you just didn't know how to do?
3) Because the question was too hard?
GMAT assassins aren't born, they're made,
Rich