The RCBS Uniflow powder measure is a popular choice among reloaders for its accuracy and ease of use. However, like any precision instrument, it requires proper maintenance and occasional troubleshooting. Understanding the individual parts and their functions is crucial for keeping your Uniflow running smoothly and delivering consistent powder charges. This guide dives deep into the components of the RCBS Uniflow, offering insights into their roles, common issues, and solutions.
Key Components of the RCBS Uniflow Powder Measure
The RCBS Uniflow powder measure is comprised of several interconnected parts working in harmony to dispense precise powder charges. Understanding these parts is the first step towards effective maintenance and repair. Let's break down the key components:
1. Hopper:
The hopper is the large, topmost part of the Uniflow where you pour your powder. Its size allows for efficient loading, minimizing the need for frequent refills. Common issues: Clogs due to clumping powder or static electricity. Solutions: Use a powder funnel to avoid spills and consider using anti-static agents. Regular cleaning is essential to prevent buildup.
2. Powder Measure Body:
This is the main housing of the Uniflow, containing the metering mechanism. The body provides structural support and houses the crucial internal components. Common Issues: Scratches or damage to the internal surface can affect the powder flow and accuracy. Solutions: Handle with care, and avoid dropping or impacting the powder measure.
3. Micrometer Adjustment:
This is the critical component controlling the powder charge. The micrometer allows for precise adjustments in charge weight, measured in grains. Common issues: Sticking or binding due to powder residue or lack of lubrication. Solutions: Regularly clean the micrometer mechanism and apply a light amount of appropriate lubricant.
4. Metering Disc:
The heart of the Uniflow, the metering disc is responsible for dispensing the powder. Its precise design determines the amount of powder delivered with each throw. Common issues: Wear and tear, causing inconsistent powder charges. Solutions: Regular inspection for wear; replacement is necessary if significant damage is observed.
5. Drop Tube:
The drop tube guides the powder from the metering mechanism to the case. Its alignment and length are critical for accurate dispensing. Common Issues: Misalignment leading to inconsistent charges, or damage from dropping or impact. Solutions: Ensure the drop tube is properly aligned and securely attached. Replacement may be necessary if damaged.
6. Handle and Linkage:
The handle facilitates the operation of the Uniflow, while the linkage connects the handle's movement to the metering mechanism. Common issues: Loose linkage can affect the consistency of the powder charge and lead to inaccurate metering. Solutions: Ensure the linkage is properly tightened and functioning smoothly.
Troubleshooting Common Uniflow Problems
Beyond understanding the individual parts, you need to know how to diagnose and solve common problems. Here are some frequent issues and their potential solutions:
- Inconsistent Powder Charges: This is often caused by a dirty metering disc, a misaligned drop tube, or a worn-out metering mechanism. Clean the parts thoroughly and check their alignment.
- Powder Bridges: This is a common issue, especially with slower-flowing powders. Using a powder funnel and tapping the hopper gently can help.
- Static Electricity: Static cling can cause powder to stick to the hopper and metering disc. Using anti-static agents or a grounding strap can alleviate this.
Maintaining Your RCBS Uniflow
Regular maintenance is crucial for the longevity and accuracy of your Uniflow. Here are some key maintenance tips:
- Regular Cleaning: Clean your Uniflow after each reloading session to prevent powder buildup and ensure accurate dispensing.
- Lubrication: Apply a very small amount of appropriate lubricant to moving parts like the micrometer adjustment.
- Inspection: Regularly inspect the components for signs of wear and tear, especially the metering disc and drop tube.
By understanding the individual parts of your RCBS Uniflow powder measure and implementing these maintenance and troubleshooting tips, you can ensure its continued accuracy and reliable performance for years to come. Remember, consistent, accurate powder charges are crucial for safe and effective reloading.
