How can a bullet ricochet off water?

Answer 1

The speed of the bullet at the time it leaves the chamber, is so high, that i can - when hitting water ( at the right angle ) skip.
If you hit water at high speed, it will feel way harder than hitting it with low speed.

For example, if you want to skip stones on water, you can't throw the stone slowly, you will have to give the stone some speed - or else it wont skip.

Answer 2

When a bullet hits the surface of the water at a low angle and with high velocity, it can skip across the water like a skipping stone, causing it to ricochet. The bullet's velocity and angle determine whether it will sink into the water or skip off its surface.