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Borderlands 4 Chaumurky Review — Legendary Ordnance

Published: 8/15/2026 · Updated: 11/15/2026 · As of 2026-07

Red Text
Will someone try it tonight?

This review was machine-translated from the Japanese original. Numbers are checked against the original; if the wording reads oddly, the Japanese version is authoritative.

When thrown, it finds enemies along its path, sticks to them, and repeatedly moves away and returns, the “Relentless Tracking Grenade”. It is Order-made, causing a kinetic splash explosion on impact, then briefly looping back to the same enemy. Its hallmark is a single throw that continuously deals damage to a single enemy over a long time.

🧩 Red text source “Dune / Planet of Dunes” (Frank Herbert) reference. “chaumurky” is a term in the Dune universe referring to poison added to drinks. The red text “Will someone try it tonight?” is a nod to the thought process in Volume 1 Chapter 16 of the original, where Duke Leto Atreides ponders “chaumurky or chaumas (food poison)” (Borderlands Wiki / various BL4 guides cite Dune origin). Poison = assassination motif matches the behavior of sticking to a target and persistently damaging it.

What kind of grenade? (Beginner’s perspective)

• When thrown in a straight line, it locks onto one enemy along its path and tracks it
• On impact, Kinetic Splash Explosion (physical damage with no element)
• After a hit, briefly loops and returns to the same enemy → repeats re‑hits
• This tracking cycle lasts 16 seconds, engraving up to a maximum of 13 times on the same target before disappearing
• If the target is lost, it searches for another enemy and continues tracking
• Rather than scattering a herd, it excels at sticking to a tough single target (boss/elite) for a long time and chipping it away

Unique Effects (Mechanics)

When thrown in a straight trajectory, it tracks enemies along its path and on impact triggers a Kinetic Splash Explosion. After each hit it goes through a short loop back to the same enemy for a re‑hit. Over 16 seconds it hits the same target up to 13 times before disappearing.

• In‑game: continuous homing on the target
• Web (Lootlemon): When thrown in a linear trajectory, it seeks an enemy along its path and deals Kinetic Splash Ordnance Damage on impact. After each hit it flies a short loop before returning to the same target, dealing damage again. If the target is lost it seeks a new enemy. This cycle repeats for 16s, hitting the same target up to 13 times before disappearing.
• Since the element is Kinetic (physical), it deals raw damage rather than applying status effects
• Weakness: because it specializes in single‑target behavior, it is not suited for clearing dense groups (the tracking sticks to one enemy)

Drop Farming

Build Compatibility

Summary

• A tracking grenade that sticks to the target and re‑hits up to 13 times within 16 seconds
• Excels at chipping away at tough single targets with kinetic (physical) damage over a long duration
• Better suited for continuous damage on bosses/elite enemies than for clearing groups
• Both the name and the red text reference the Dune poison (chaumurky) lore
• Obtained from Foundry Freaks in The Pitted Stain

Measured Stats (Aggregated from Owned Units)

This is an aggregation of measured values taken from screenshots of owned units. The range reflects the observed minimum‑to‑maximum, with no conversion, rounding, or interpolation applied.

• Observed prefixes (most common): Rapid×1

Related

• Same category (Grenade): Jelly / Countermeasure / Destructo Disco / Faulty Detonator / Firepot
• Reference: Lootlemon - Chaumurky / MentalMars - Chaumurky