Are the Barron's SAT Bio practice tests good predictors of your actual score?

<p>I've done 4 Barron's practice tests, and I have gotten 740, 770, 750, and 760. Should I be expecting a score between 740-770 on the real test? Higher? Lower?</p>

<p>I have read that the Barron's practice tests are actually harder and more in depth than the real test, but I just wanted to make sure. I REALLY want an 800, and will probably retake I don't get at least a 770.</p>