Should I retake the SAT or the ACT?

I’m a rising senior and I want to retake one of the tests to help with college admissions but I’m not sure which one to take. I have a 1400 on my SAT (710 math, 690 CR/W) and a 29 on my ACT. When I take practice SATs, I don’t see very much improvement at all in my scores and my goal would be to score a 1500. If I retake the ACT I would want a score of at least 32. I’m generally very good with math and grammar, but my weaker points are reading and the science section of the ACT.

SAT. Do Khan practice