Hey SN, thanks for checking us out!
So yeah, as Pace already stated, we -believe- it is precise as it could be. We used the gravitational equation to affect the bullets around those fields in the game, so the way they behave and interact should be realistic! However, you're completely welcome in saying that it may still feel a little too sensitive. I won't burden you with the math, but for some physical/mathematical reasons we already had to limit the maximum velocity of objects leaving it, otherwise they would scale to infinity, but with more testing and inputs we might have to reduce it even more. Time - not space, this time! - will tell. P:
Now, a more detailed tutorial though, is a good idea. A challenge mode even, would be super cool to have, so thanks for the input. I hope you had fun playing! :D