This is my [Kuva Chakkhurr] build for end game content. It works best when you want extremely high single target damage.

I went with [Serration] over [Galvanized Scope] for consistency. [Galvanized Scope] has higher damage potential but you need five headshots to activate that potential. Sometimes you will miss, even if you have amazing aim, and [Serration] ensures this weapon maintains a high level of consistency. If you feel confident in your ability to not miss headshots, you can use [Galvanized Scope].

Deadhead is chosen because of the headshot damage multiplier and it only requires 3 headshots to activate instead of 5. Merciless can work too because of it's reload speed buff but that can come from warframe buffs instead like [Gauss] and [Wisp].

This build works in two ways. First, there's very high up front damage which benefits from obscene crit stats. Then, if you can't kill something outright, [Internal Bleeding] will finish the job.

This is one of the best single target weapons in the game. The aoe can help with groups but I think this weapon is really best used to kill high armor single targets like steel path Thrax, Demolysts, and Exilus units. I bring this gun to void cascade, disruption and assassinations. There are better guns for crowds imo.