Here is Kuva Brahma, the poster boy for explosive weapons. Viral Slash to combat all health types. I use Viral to increase Slash bleed damage, and multiple raw damage mods to increase Slash bleed damage further. This is also my casual Kuva Brahma I use to clear out trash Steel Path mobs to do that just equip [Primed Firestorm] instead of Bane mods on it. It will [Reach] 1 Million DPS with the appropriate Bane Faction mods instead of [Firestorm] but it doesn't need the Bane mods for base SP. Also, if you don't mind the slower Fire Rate then use [Critical Deceleration] instead, I use [Critical Deceleration] with my [Wisp] but [Gauss], etc. should work too.

Enjoy :)

For more Critical Chance, Damage, and Ammo:

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/