A 510-513 MCAT with your GPA means a ~67% chance you’ll wind up being rejected from everywhere you apply to.
What was your SAT score? Obviously not a perfect correlation but let’s start to think about how realistic it is you’ll score in the 514+ category (where the percentage of students who got in was higher than the percentage who didn’t) which means doing better than 92% of MCAT test takers. The MCAT pool is more competitive than the SAT pool. As an example, I was 99.9th percentile on my SAT but 97% on my MCAT (which might sound like a minuscule difference, but it’s the difference between 1/1000 test takers doing better than I did and 1/33 doing better than I did - a roughly 30 fold increase in the proportion of people outscoring me). It’s certainly more likely than not that your MCAT performance will be “weaker” than your SAT.
P.S. WOWMom, the “newer table” is literally the exact table I posted.