I personally choose [Vigilante Supplies] over Terminal Velocity because at the ranges where the Acceltra is most effective, orange crits are more valuable against higher-level targets than landing the missile faster. If you're leading the shot well, it shouldn't be too much of a struggle. It also makes it easier to source ammo by converting all unused ammo into more ammo for the [Acceltra]. Combined with [Vigilante Fervor], you get up to a 10% on the set bonus, meaning that since our crit is almost 100%, nearly one in every ten shots will be an orange crit.