Your gunslinger accuracy relates to how well you choose your spirit's target (e.g. using soul drain to deal 10k damage instead of 2k, or placing the ice ball right so that it tanks effectively), whereas the speed of shooting depends on how fast you can reload (i.e. how effectively you collect rage) and how much cooldown time the weapon needs (i.e. spirit rest).
Anyway, let me know if you need any help.
