RCBS UPM-3 Competition Powder Measure

• Micrometer adjustment screw: lets the operator make fine, repeatable charge changes and record settings for later use, which is especially useful when returning to proven rifle or pistol loads.
• Powder baffle system: helps keep pressure on the metering unit more consistent as the hopper level changes, supporting steadier throws through longer loading sessions.
• 0.5 to 100 grain metering range: one metering cylinder and screw cover both light pistol charges and heavier rifle loads, reducing setup changes on the bench.
• Quick Change Drain attachment: makes it easier to empty the hopper without unnecessary mess, saving time when changing powders or storing the measure after use.
• Ambidextrous cast-iron design: the handle can be set for right- or left-hand operation, while the cast-iron body adds the stability and durability expected from a bench-mounted reloading tool.

About the UPM-3 Series

The RCBS UPM-3 series sits in the brand’s mechanical powder-measure lineup as a more refined option for reloaders who want the speed of volumetric dispensing with greater control over repeatability. Built around the long-established Uniflow measuring system, the series is intended for handloaders assembling both rifle and pistol ammunition and who need a measure that can move between different charge weights without becoming complicated to operate. Its role is practical: deliver consistent powder charges quickly, while still allowing the user to verify settings with a scale and keep records for future load development.

What distinguishes the series is its focus on controlled metering rather than simple bulk dispensing. Features such as a micrometer-style adjustment system, a powder baffle, and a design that uses one metering cylinder for rifle and pistol applications make it well suited to reloaders who work with multiple cartridges. The mechanical layout follows RCBS’s bench-tool philosophy of straightforward operation, serviceability, and robust construction. In practice, the UPM-3 family appeals to shooters who want a traditional powder measure with more precise adjustment, easier repeat settings, and a workflow that fits careful ammunition loading rather than high-speed automated production.

About the RCBS UPM-3 Competition Powder Measure

The RCBS UPM-3 Competition Powder Measure is designed for reloaders who want a mechanical powder measure that is faster than weighing every charge individually, but more controlled than a basic volumetric unit. Its defining feature is the Micrometer Adjustment Screw, which allows precise changes to the metered charge and gives the user a reference point that can be recorded and returned to later. That matters when developing loads for several cartridges, because it shortens setup time and makes proven settings easier to repeat.

This model combines the proven Uniflow Powder Measure with a powder baffle to help regulate powder flow and reduce the effect of changing powder-column pressure in the hopper. In practical terms, that supports more uniform throws over the course of a loading session. The measure uses one metering cylinder and screw for both rifle and pistol, covering a stated range of 0.5 to 100 grains, so it can handle light handgun charges as well as substantially heavier rifle loads without requiring separate assemblies.

Bench use is also improved by details that make daily handling easier. The Quick Change Drain attachment simplifies emptying the hopper when changing powders, the threaded hopper aids removal and cleaning, and the handle can be positioned on either side for left- or right-hand operation. A cast-iron construction adds stability and long service life, making this powder measure a strong fit for reloaders who value repeatable settings, broad charge capability, and a durable bench-mounted tool.

About RCBS

RCBS was founded in 1943 by Fred T. Huntington in Oroville, California. The company name comes from Rock Chuck Bullet Swage, the original bullet-swaging die that started the business. From that beginning, RCBS developed into a specialist in ammunition handloading and reloading equipment for rifle and pistol cartridges, with product lines that include presses, dies, shell holders, powder measures, and priming tools.

RCBS is still closely associated with Oroville, California, where it manufactures reloading tools, and its lineup covers single-stage, turret, and progressive reloading presses alongside the accessories that support precise ammunition assembly. In 2024, RCBS became a brand of Hodgdon Powder Company after its sale by Revelyst. For reloaders, the brand is known for practical bench equipment built around repeatability, durability, and compatibility across a wide range of loading tasks.

Main Features

• Manufacturer: RCBS
• Model: UPM-3 Competition Powder Measure
• Product type: Powder measure
• Accessories for: Presses, Reloading
• Made in: USA
• Color: Green

Warranty

The RCBS UPM-3 Competition Powder Measure is covered by a 2-year warranty.

In the Box

• RCBS UPM-3 Competition Powder Measure
• Drain attachment
• Two drop tubes