This is best paired with 100% Armor Strip, a damage buff like Roar or Eclipse, and vigilante mods on your sentinel. The value of [Primed Ravage] becomes +55% higher once you obtain the +20% Critical enchantment from Vigilante. If you don't have good Secondary, then it's better to replace Galvanized Acceleration with Vigilante Supplies or Ammo Mutation as Phantasma is ammo-hungry. Replace [Critical Deceleration] with [Primed Point Blank], if playing without a damage buff, or with Primed Faction mods if playing above level 600.

Short Vigilante Guide:

• If you have a sentinel gun such as [Sweeper Prime], then you can take advantage of it by equipping all 4 Vigilante mods in its mini shotgun to obtain the Vigilante mod set bonus. It will give you jailbroken 20% critical enchantment, which pairs well with any primary. Jailbroken, as in that you don't need to equip any Vigilante mods into your primary to retain the bonus, and equipping more vigilante mods into your primary won't increase the effect. However, you can equip Vigilante mods into your warframe if you want, Vigilante Pursuit is quite good.

Carrier Prime build: https://overframe.gg/build/468562/ Replace it with Panzer or Djin for SP Endurance.
Sweeper Prime build: https://overframe.gg/build/485975/

Disclaimer: I am using Primary Deadhead for base damage stacks, so you need to get some headshoot kills to get [Phantasma] going. It isn't mandatory, but if you want an easier time use a damage buff to kill the enemy even without damage stacks. You will obtain higher damage values with Primed Faction Smites(455k) instead of [Critical Deceleration](400k), but a [Primed Ravage] without critical chance is less reliable than using a [Primed Point Blank](456k) unless you are using the Vigilante mods bonus in which case [Primed Ravage] becomes stronger (500k) than [Primed Point Blank].

Enjoy :3