Which guns are best?

[kikatsu]

Something else to note is projectile speed.

750 M/S guns are going to be a lot easier to hit people with just because they close the distance the fastest.

Also keep in mind the speeds of all the guns mounted, as the targeting system takes an average I believe, so if your gun speeds do not match and you aim at the little red + in front of a ship you man not be able to actually hit it because the average speed of your 600 guns and your 750 guns makes it so one gun undershoots the target and the other overshoots despite your aim.