For those without a riven, You may choose to have Serration equipped, else Bladed Rounds is a good option too.
For those looking for even higher damage, Galvanized Scope can increase damage by a lot, but requires additional work to achieve that damage number
Most importantly, you will want to swap out the Bane mod for the correct faction that you're fighting.
To increase the explosive range of this weapon, I made used of the [Amalgam Furax Body Count] mod that can be utilised on the [Furax] melee weapon