Is the RCBS UPM-3 Powder Measure Hopper compatible with black powder reloading?

No, the manufacturer explicitly prohibits using this hopper with black powder due to the serious explosion risks associated with potential electrostatic discharge. It is designed strictly for modern smokeless powders, including extruded, ball, and flake varieties.

How does the threaded design of model R169031 improve performance during high-volume reloading sessions?

Unlike older push-fit models that rely on friction, this hopper features precision-molded threads at its base that screw directly into the RCBS UPM-3 body. This secure threaded connection prevents the reservoir from accidentally slipping out, shifting, or spilling powder during intensive benchtop reloading.

What is the powder capacity of this threaded hopper?

The hopper has a total capacity of up to 1 lb of gun powder. Depending on the powder type, this equates to approximately 0.5 lbs of extruded powder or 0.33 lbs of flake powder when feeding working charge weights ranging from 0.5 grains up to 100 grains.

Does this manual reloading accessory require any electrical compliance or SAA/RCM certification for use in Australia?

Because the RCBS UPM-3 Powder Measure Hopper is a purely mechanical, non-powered component with no electrical parts, it does not require a 240V power supply, Australian mains plugs, or SAA/RCM safety certifications.

Powder Measure Hopper - RCBS R169031

The RCBS UPM-3 Powder Measure Hopper Threaded with Cap (Model R169031) is a factory-replacement assembly engineered to restore or upgrade the reservoir system of your reloading bench. This kit includes a large, heavy-duty polymer powder hopper and a secure-fit cap, designed to replace damaged, discoloured, or missing components. Engineered specifically for the RCBS Uniflow Powder Measure III (UPM-3) and UPM-3 Competition Powder Measure systems, this assembly features precision-molded threads at its base. Unlike legacy friction-fit reservoirs, this threaded interface screws directly into the cast-iron body of the UPM-3, eliminating the risk of the hopper slipping, shifting, or spilling powder during high-volume reloading sessions.

Key Features

Threaded Base Connection: The precision-molded threads screw directly into the cast-iron body of compatible UPM-3 measures, replacing legacy part numbers 7109030, 20044710, and 20044711 to prevent accidental detachment.
NG-Resistant Polymer Construction: Built from a specialized, heavy-duty polymer that resists chemical degradation from nitroglycerine (NG) and prevents dangerous static charge build-up.
Secure-Fit Cap: Includes a matching cap that seals the reservoir to prevent ambient moisture, dust, and debris from contaminating the powder.
Purely Mechanical Operation: Requires no external power source or electrical certifications, making it fully compatible with standard Australian manual reloading setups.

Product Specifications

Model Number: R169031
Compatible Systems: RCBS Uniflow Powder Measure III (UPM-3) and UPM-3 Competition Powder Measure
Total Powder Capacity: Up to 1 lb (approx. 453.6 g) of gun powder
Extruded Powder Capacity: Approx. 0.5 lbs (226.8 g)
Flake Powder Capacity: Approx. 0.33 lbs (151.2 g)
System Charge Weight Threshold: Feeds metering units dispensing from 0.5 grains up to 100 grains (0.10 grain accuracy)

Who is the Rcbs Upm 3 Powder Measure Hopper Threaded With Cap for?

Precision handloaders — requiring a factory-spec replacement powder measure hopper for their UPM-3 system that holds up to 1 lb of powder while supporting a metering system accurate to 0.10 grains.
High-volume reloaders — seeking to eliminate powder spills on their bench by upgrading to a threaded, static-resistant powder measure hopper that safely stores up to 0.5 lbs of extruded powder or 0.33 lbs of flake powder during operation.

Less suitable for: reloaders using black powder, as this polymer hopper is strictly rated for modern smokeless powders and is unsafe for black powder applications due to static discharge explosion risks; these users require a specialized black powder measure constructed with non-sparking metal or static-shielded materials.

SKU	RC39191LP
Model #	R169031
Brand	Rcbs
Shipping Weight	1.0000kg

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Rcbs R169031 Upm-3 Powder Measure Hopper Threaded Cap 1 Lb

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