How does a rifled barrel of a weapon makes a weapon much more accurate?

Question

How does a rifled barrel of a weapon makes a weapon much more accurate?

In: Engineering

Answer 1

It imparts a spin on the bullet.

This gives them a more predictable and flight path (predictable as in if you fire repeated rounds they should all hit more or less the same spot on the target if they’re being shot out of a high quality barrel), resulting in higher precision.

Accuracy is essentially the ability to hit what you’re aiming at, so a predictable bullet flight path allows for sighting in of the gun. If you fired 10 rounds and got hits that were each 3-4″ apart from one another on a target 10′ away this would be pretty hard to do. If all the shots hit within a 1″ group it’s much easier.