A suitable system for measuring the location of events in time and space would be to have a three dimensional grid of measuring rods with a clock at each point on the grid. How should the clocks be synchronized to ensure consistent measurements?

at right angles to each other

magnets not strong enough

explanation:

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.