The most accurate over-the-counter (not custom) bullets that I know of are Sierra Matchkings. They are used in 1,000 yard competition where any little flaw will show up. They are hollow points. If plastic tips made bullets more accurate, Sierra could have converted the Matchkings from hollow points to tipped bullets years ago.
I agree with Jordan Smith, the tip offers better BC and expansion.


Keep your gun-hand ready and your eyes peeled.