avoids misaka worst railgun

She played with the two centimeter steel nails in her hand.
At times, a nail would be fired at over the speed of sound along with the sound of a
bursting balloon.
But...
(From the amount of electricity she’s using, that isn’t a practical railgun.)
As the situation had him cornered, Accelerator forced his head out of its chaos to
analyze the situation.
(The same method is used in the magnetic sniper rifles some snipers use. Instead of
Fleming’s left-hand rule, it more simply uses an electromagnet to fire a steel bullet.)
Accelerator was still not using his reflection.
Instead, he was altering the vectors of his leg strength to take quick bursts of speed and
escape Misaka Worst’s aim.

- Toaru Majutsu no Index Volume 20, Chapter 3 Part 7