i have only one doubt about this feat and is if you can use it together with Spell Cartridges, normally i would think you can't since it says and i quote:
"If you have a weapon that is augmented by your Arcane Strike feat, when you damage a creature with an attack made with that weapon, that creature takes a –2 penalty on saving throws against spells and spell-like abilities. This effect lasts for 1 round."
But range weapons are peculiar in Pathfinder and their ammo inherit any magic effect the weapon has, also the feat doesn't specify it is melee only and Firearms and any other range weapon can be augmented with Arcane Strike.