Unlock Unrivaled Precision: The RCBS 87305 Dial Caliper for the Discerning Reloader
Are you a dedicated handloader striving for ultimate accuracy and consistency in your ammunition? Do you demand precision measurement tools that stand the test of time and provide unwavering reliability, shot after shot? If achieving repeatable results and maximizing the performance of your firearms is your goal, then the RCBS 87305 Dial Caliper is an indispensable instrument you need to master.
This comprehensive guide will delve into why this exceptional stainless steel, multi-caliber measurement tool from RCBS is not just a desirable accessory but a fundamental requirement for anyone serious about reloading. We'll explore its unparalleled benefits, practical applications, and how it directly contributes to safer, more precise, and ultimately more enjoyable shooting experiences. For those wondering how to achieve tighter groups, extend brass life, or simply ensure every round meets exacting specifications, this caliper holds many of the answers.
Why Precision Measurement is Non-Negotiable in Handloading
Before we dive into the specifics of the RCBS 87305, let's establish why accurate measurement is the bedrock of successful handloading. Every component of a cartridge – from the primer and powder to the bullet and case – interacts in a carefully choreographed sequence. Deviations, even minuscule ones, can have significant impacts on safety, accuracy, and firearm function.
Consider these common challenges faced by reloaders:
- Inconsistent Overall Length (OAL): Variations in OAL can lead to pressure spikes (too short), feeding issues (too long), or erratic accuracy due to inconsistent bullet seating depth relative to the rifling.
- Incorrect Case Length: Cases that are too long can cause dangerous pressure increases when compressed between the bolt face and the chamber shoulder/mouth, leading to case neck crimping into the chamber or even catastrophic failures. Cases that are too short can affect bullet tension and consistent powder burn.
- Primer Pocket Depth: An improperly seated primer (too shallow or too deep) can result in light strikes, misfires, or inconsistent ignition.
- Bullet Diameter and Runout: While less common to measure with a caliper, ensuring your bullets are within spec for your bore is crucial. Calipers can help identify manufacturing inconsistencies.
The question isn't whether you need to measure, but how accurately you can measure. The RCBS 87305 Dial Caliper provides the robust, repeatable precision required to eliminate these variables and build cartridges that perform exactly as intended.
The RCBS 87305 Dial Caliper: A Cornerstone Tool for Every Reloader
The RCBS 87305 is not just any caliper; it's a testament to RCBS's legacy of producing high-quality reloading equipment. Crafted from durable stainless steel, this mechanical dial caliper offers a multitude of benefits that digital counterparts often struggle to match, particularly in a demanding environment like a reloading bench.
Key Features and What They Mean for You:
- Stainless Steel Construction: This isn't just about aesthetics. Stainless steel provides exceptional durability, corrosion resistance, and stability, ensuring your caliper maintains its accuracy even after years of use. It resists rust from lubricants, solvents, and the natural humidity of a workshop. This means your investment is protected and will continue to perform reliably for decades.
- Multi-Caliber Capability: As a true multi-caliber tool, the RCBS 87305 can measure components for virtually any rifle, pistol, or even shotgun slug reloading project. From tiny .22 Hornet cases to large .50 BMG components, its 6-inch (150mm) capacity handles the vast majority of measurements a reloader will encounter. There's no need for multiple specialized calipers; this single tool covers all your needs.
- Dial Readout: Unlike digital calipers that rely on batteries and can be susceptible to electronic interference or temperature changes, the RCBS dial caliper provides an immediate, clear, and unambiguous analog reading. The smooth, precise movement of the dial needle across the graduated scale allows for quick and accurate readings without the worry of battery failure mid-session. This is a significant advantage for long reloading sessions where consistent, uninterrupted workflow is paramount.
- Precision Measurement: Capable of measuring in increments as fine as 0.001 inches, this caliper offers the resolution necessary for all critical reloading dimensions. This level of precision is crucial for maintaining tight tolerances and achieving optimal cartridge performance.
Practical Applications: How the RCBS 87305 Solves Your Reloading Problems
Let's explore specific scenarios where the RCBS 87305 Dial Caliper becomes an indispensable ally on your reloading bench:
- Measuring Overall Cartridge Length (OAL):
- Problem: Inconsistent OAL leads to variations in chamber pressure, bullet jump, and potential feeding issues.
- Solution: Use the large jaws of the caliper to measure the total length from the case head to the bullet tip. This allows you to precisely set your seating die and ensure every cartridge meets your desired OAL specification, critical for both accuracy and safety, especially when loading for specific rifles with tight chambers. How do I achieve consistent bullet seating? By using your RCBS Dial Caliper to verify every 5th or 10th round, you can ensure your die settings are stable and producing the desired OAL.
- Verifying Case Length for Trimming:
- Problem: Fired cases stretch. If too long, they can cause dangerous pressure spikes and reduce brass life.
- Solution: Measure the length of your fired cases from the case head to the mouth. Compare this to the maximum and trim-to lengths specified in your reloading manual. The RCBS 87305 allows you to accurately determine which cases need trimming, preventing over-pressure situations and ensuring optimal neck tension. What is the best way to maintain brass integrity? Regular measurement and trimming based on caliper readings are key.
- Checking Case Neck Diameter and Thickness:
- Problem: Inconsistent neck tension can lead to variations in bullet pull, affecting powder burn efficiency and accuracy.
- Solution: Use the smaller internal jaws to measure the inside diameter of the case neck. You can also use the external jaws to measure the outside diameter with a bullet seated. This helps you identify overly thick or thin necks, or ensure proper expander ball settings. This is especially important for competitive shooters seeking peak performance.
- Assessing Primer Pocket Depth and Uniformity:
- Problem: Primers seated too shallow can cause misfires; too deep can lead to inconsistent ignition.
- Solution: The depth rod (the thin rod extending from the end of the sliding jaw) is perfect for measuring primer pocket depth. This ensures your primers are seated to the correct depth, flush or slightly below the case head, leading to reliable ignition.
- Measuring Bullet Diameter:
- Problem: Verifying bullet consistency.
- Solution: While not its primary role, the caliper can quickly confirm the nominal diameter of your bullets, ensuring they are within manufacturing specifications.
- Gauging Rim Thickness or Extractor Groove Depth:
- Problem: Ensuring proper fit in your firearm.
- Solution: The caliper can be used to measure these less common but sometimes critical dimensions, especially when troubleshooting feeding or extraction issues.
The RCBS Advantage: Building Trust and Authority
RCBS has been a cornerstone of the reloading community for decades, synonymous with quality, durability, and innovation. The 87305 Dial Caliper embodies this legacy. When you invest in an RCBS product, you're not just buying a tool; you're buying into a system designed for precision and longevity. This dedication to excellence is why RCBS products are consistently recommended by seasoned reloaders, competitive shooters, and firearms instructors worldwide.
- Reliability You Can Feel: The smooth, precise action of the RCBS dial caliper is immediately apparent. There's no slop or play, just solid, repeatable movement that inspires confidence with every measurement.
- Built to Last: Its robust stainless steel construction is designed to withstand the rigors of a busy reloading bench, resisting drops, bumps, and exposure to various chemicals. This is a tool that will likely outlive you if cared for properly.
- Ease of Use: The clear dial readout makes taking measurements quick and intuitive. No fumbling with digital displays or worrying about battery life. Simply slide, read, and repeat.
- The Mark of a Serious Reloader: Owning and utilizing high-quality measuring tools like the RCBS 87305 signals a commitment to accuracy, safety, and the continuous pursuit of reloading excellence.
Elevating Your Reloading Game: Beyond Basic Measurements
Beyond the fundamental tasks, the RCBS 87305 Dial Caliper empowers you to delve into more advanced aspects of reloading:
- Developing Optimal Bullet Seating Depth (Ogival Measurement): While a standard caliper measures OAL to the bullet tip, you can use the flat jaws to measure to the bullet's ogive (the point where the bullet's curve begins to touch the rifling). This provides a more consistent measurement point than the often-irregular bullet tip, leading to more precise bullet jump experiments for maximum accuracy.
- Sorting Cases by Length: For extreme precision, you might sort your trimmed cases into groups of highly consistent length. The caliper makes this task efficient and accurate.
- Verifying Die Settings: After adjusting a sizing or seating die, a quick measurement with your RCBS caliper confirms the die is set correctly before you start mass production. This proactive approach saves time and prevents wasted components.
- Quality Control for Components: Randomly check bullet diameters, primer heights, or even powder bushing dimensions (if applicable) to ensure consistency from your suppliers.
The best tools for achieving consistent reloading results always include a high-quality caliper. The RCBS 87305 fits this description perfectly, providing the accuracy and durability required for demanding tasks.
Investing in Accuracy: Where to Find Your RCBS 87305
When you're ready to elevate your reloading precision and take control of your ammunition's performance, the RCBS 87305 Dial Caliper is an essential acquisition. For a reliable source of all your reloading needs, including this indispensable tool, we recommend purchasing from DEGuns. DEGuns.com offers a wide selection of RCBS products, ensuring you get authentic, quality gear with excellent customer service. You can find your RCBS 87305 Dial Caliper and all related reloading accessories readily available at DEGuns.
Remember, consistent, accurate ammunition begins with consistent, accurate measurements. The RCBS 87305 Dial Caliper provides the foundation for building cartridges that perform flawlessly, enhancing your shooting experience whether you're at the range, in the field, or competing for top honors. Make the wise investment in precision and experience the tangible difference it makes in your reloading journey.
Product Specifications & Details
| Feature | Description |
|---|---|
| Model | RCBS Dial Caliper |
| UPC | 87305 |
| Construction | Stainless Steel |
| Measurement | Inches (0.001" increments) |
| Capacity | 6 inches (150 mm) |
| Type | Mechanical Dial Caliper |
| Application | Multi-Caliber Ammunition Reloading (Rifle, Pistol, Shotgun) |
| Benefits | Durable, Reliable, No Batteries Required, Clear Analog Readout, High Accuracy |
| Availability | Available at DEGuns |
