Elevate Your Precision Reloading: The Lee 90710 Collet 2-Die Set for 6mm Remington

For the dedicated handloader who prioritizes pinpoint accuracy and extended case life, the quest for superior ammunition is a perpetual journey. If you're a competitive shooter, a discerning hunter, or simply an enthusiast who demands the utmost consistency from your rifle, you understand that the quality of your reloads directly impacts your firearm's performance. The ability to craft cartridges that boast exceptional bullet concentricity and perfectly calibrated neck tension is paramount. This is precisely where the Lee 90710 Collet 2-Die Set, specifically designed for the venerable 6mm Remington cartridge, emerges as an indispensable tool in your reloading arsenal.

This comprehensive die set is not just another accessory; it's a foundational component for anyone serious about optimizing their 6mm Remington ammunition. It addresses core reloading challenges, offering a precise solution for neck sizing that traditional full-length sizing dies often cannot match. Imagine the confidence of knowing each round you load is meticulously uniform, contributing to tighter groups downrange and preserving your valuable brass for numerous reloading cycles. The Lee 90710 Collet 2-Die Set empowers you to achieve this level of consistency, simplifying what can often be a complex aspect of precision handloading. It's available for purchase at DEGuns, a trusted source for high-quality reloading equipment.

Why Precision Neck Sizing Matters: Unlocking Your Rifle's Full Potential

Many reloaders ask, "Why should I bother with a collet die set when my full-length sizing die seems to work fine?" The answer lies in the nuances of case preparation and the profound impact it has on accuracy and brass longevity.

The primary function of neck sizing is to resize only the neck of the fired cartridge case, just enough to securely hold a new bullet, without altering the fire-formed body of the case. When a cartridge is fired, the brass expands to perfectly fit the unique contours of your rifle's chamber. Full-length sizing, while necessary for rounds that will be fired in different chambers or for semi-automatic rifles, uniformly resizes the entire case. This repeated full-length sizing can work the brass excessively, leading to premature case fatigue, stretching, and ultimately, a shorter lifespan for your valuable components.

Collet neck sizing, as facilitated by the Lee 90710 set, provides a gentle yet firm grip on the case neck. Instead of pushing the entire case through a sizing ring, a collet die uses a series of fingers (collets) that are squeezed inward by a tapered punch, resizing only the neck. This minimizes brass working, extending the life of your cases significantly. Furthermore, by leaving the case body fire-formed to your chamber, you maintain superior alignment of the cartridge in the chamber, a critical factor for achieving optimal bullet-to-bore concentricity. This translates directly into improved accuracy, as the bullet enters the rifling perfectly straight and consistent from shot to shot. If you're chasing those sub-MOA groups, a collet die set like the Lee 90710 for your 6mm Remington is a non-negotiable upgrade.

Who Is This Die Set For? Identifying the Ideal User

The Lee 90710 Collet 2-Die Set is an ideal solution for:

• Precision Rifle Shooters: If you compete in F-class, benchrest, or long-range shooting disciplines, every detail matters. This die set provides the concentricity and consistent neck tension necessary to extract maximum accuracy from your 6mm Remington rifle.
• Hunters Seeking Optimal Performance: For those who demand ethical, single-shot precision in the field, knowing your hunting rounds are as consistent as possible can make all the difference.
• Reloaders Focused on Case Life: If you've invested in high-quality 6mm Remington brass, you want to get as many reloads as possible from it. Collet sizing significantly reduces brass fatigue, saving you money in the long run.
• Anyone Concerned About Bullet Concentricity: Poor bullet runout leads to inconsistent flight paths. This die set helps ensure your bullets are seated perfectly straight.
• Handloaders with Dedicated Rifles: This system excels when you are loading for a specific rifle, as it leverages the unique dimensions of your chamber.

If you find yourself asking, "How can I make my 6mm Rem reloads more accurate?" or "What's the best way to extend the life of my 6mm Rem brass?", then the Lee 90710 Collet 2-Die Set is designed specifically to answer those questions with a resounding "Yes!"

Deconstructing the Lee 90710 Collet 2-Die Set: Components and Their Functions

This specialized die set, tailored for the 6mm Remington, includes the essential components you need for superior neck sizing and bullet seating:

1. Collet Neck Sizing Die: This is the cornerstone of the set. It features a hardened steel collet that grips the case neck. As the die body is raised by your press, the collet fingers are pressed inward by a tapered punch, resizing only the neck while leaving the fire-formed case body untouched. This design not only minimizes brass working but also ensures exceptional bullet concentricity. The mandrel inside the die sizes the neck to the correct internal diameter, ensuring consistent neck tension.
2. Dead Length Bullet Seating Die: Precision bullet seating is critical for accuracy. This die utilizes a "dead length" design, meaning the seating stem contacts the bullet directly without relying on the shell holder for the final seating depth. This design minimizes variations in seating depth caused by differences in case length, providing more consistent overall cartridge length (COAL) and better bullet alignment. It allows for micro-adjustments, ensuring that your bullets are seated to the exact depth required for optimal performance in your rifle.

The careful engineering of these two dies working in concert allows reloaders to achieve a level of precision that is often elusive with more conventional die sets. Each component is manufactured to Lee Precision's stringent standards, ensuring durability and consistent performance over countless reloading sessions.

Step-by-Step: How to Use the Lee 90710 Collet 2-Die Set

Mastering the use of the Lee 90710 Collet 2-Die Set is straightforward, even for those new to collet sizing. Here’s a general guide to get you started:

Preparation:

• Ensure your 6mm Remington cases are clean, deprimed, and trimmed to the appropriate length.
• Chamfer and deburr the case mouths.
• Inspect cases for any signs of damage or fatigue.

Setting Up the Collet Neck Sizing Die:

1. Thread the Collet Neck Sizing Die into your reloading press until it touches the shell holder (with a case in it) at the top of the ram stroke.
2. Lower the ram, then thread the die down an additional 1/8 to 1/4 turn.
3. Raise the ram fully. The collet fingers should be firmly squeezing the case neck against the internal mandrel.
4. Insert a fired 6mm Remington case (which has expanded to your chamber dimensions) into your shell holder.
5. Raise the ram. The case neck will enter the die, and the collet fingers will compress around it, sizing the neck.
6. Lower the ram and remove the sized case. Inspect the neck for uniform sizing and proper internal diameter. You might need to adjust the die depth slightly to achieve the desired neck tension.
7. Key Insight: Unlike full-length sizing, collet sizing does not require case lubrication. This is a significant advantage, as it eliminates a messy step and potential source of contamination.

Setting Up the Dead Length Bullet Seating Die:

1. Thread the Dead Length Bullet Seating Die into your press until it’s about one full turn above the shell holder at the top of the ram stroke.
2. Place a sized 6mm Remington case (with a primer inserted and powder charged) into the shell holder.
3. Place a 6mm bullet on top of the case mouth.
4. Slowly raise the ram until the bullet contacts the seating stem.
5. Lower the ram and check the Overall Cartridge Length (OCL) with calipers.
6. Adjust the seating stem down (clockwise) in small increments to seat the bullet deeper, or up (counter-clockwise) to seat it shallower, until you achieve your desired OCL.
7. Once the correct OCL is achieved, lock the seating stem in place with the lock ring.
8. Pro Tip: For maximum consistency, ensure your cases are all trimmed to the exact same length before seating bullets. This minimizes OCL variations inherent to the "dead length" design.

By following these steps, you will produce 6mm Remington ammunition with consistent neck tension and precise bullet seating, two critical factors for superior accuracy.

Advanced Tips for Maximizing Performance with Your Lee Collet Die Set

While the basic operation is simple, a few advanced techniques can further refine your 6mm Remington ammunition:

• Mandrel Polishing: For ultra-smooth neck sizing and minimal brass scratching, some reloaders polish the sizing mandrel inside the collet die. Use a very fine abrasive, like 1000-grit sandpaper, followed by polishing compound, to achieve a mirror finish.
• Neck Tension Tuning: Experiment with different amounts of die body rotation (after initial contact) when setting up the collet sizing die. A small adjustment can fine-tune the resulting neck tension. Consistent neck tension is paramount for consistent bullet pull, which directly impacts muzzle velocity and standard deviation (SD).
• Annealing: For reloaders using high-quality 6mm Remington brass and seeking maximum case life, periodic annealing of the case necks can be highly beneficial. This process restores ductility to work-hardened brass, preventing cracking and maintaining uniform neck tension. While not strictly necessary for every reloading cycle, it’s a valuable technique for extending the lifespan of your cases when using a collet die.
• Record Keeping: Keep meticulous records of your loads, including powder charge, bullet type, primer, OCL, and how the ammunition performs in your rifle. Note any adjustments made to the dies. This data is invaluable for replicating successful loads and troubleshooting any issues.

The Lee Precision Advantage: Trust in Innovation

Lee Precision has built a reputation for innovative, high-quality, and affordable reloading equipment. The 90710 Collet 2-Die Set for 6mm Remington is a testament to this legacy. Their dies are known for:

• Durability: Constructed from robust materials designed to withstand years of heavy use.
• Ease of Use: Lee designs often incorporate features that simplify the reloading process, making it accessible to both new and experienced handloaders.
• Cost-Effectiveness: Providing exceptional value without compromising on performance, allowing more reloaders to invest in precision tools.
• Consistent Results: Engineered to deliver repeatable outcomes, crucial for accurate ammunition.

When you invest in a Lee Precision die set, you're not just buying a tool; you're gaining access to a system designed to help you achieve your reloading goals. This specific 6mm Remington die set embodies Lee's commitment to enabling reloaders to craft superior ammunition right in their own workshops. It’s an investment that pays dividends in accuracy and component longevity. The Lee 90710 Collet 2-Die Set for 6mm Remington is readily available for purchase at DEGuns, ensuring you can quickly get started on your journey to more precise reloads.

Frequently Asked Questions about Collet Dies and Precision Reloading

Q: Can I use the Lee 90710 Collet 2-Die Set for a semi-automatic 6mm Remington rifle?
A: While collet dies are primarily designed for bolt-action rifles where cases are fire-formed to a specific chamber, they can sometimes be used for semi-automatics if the case body doesn't expand significantly and extraction/chambering remain reliable. However, for semi-autos, full-length sizing is generally recommended to ensure reliable feeding and extraction across all conditions. If you experience any feeding issues, you would need a full-length sizing die.

Q: Do I need to lubricate cases when using the Collet Neck Sizing Die?
A: No, one of the significant advantages of the Lee Collet Neck Sizing Die is that it does not require case lubrication. This saves time and eliminates the messy step of applying and removing lube.

Q: How does this die set compare to a standard full-length sizing die set?
A: A standard full-length sizing die resizes the entire case, including the body and neck, returning it to factory dimensions (or slightly under). This is necessary if cases are being fired in multiple rifles or for semi-automatics to ensure proper feeding. The Lee 90710 Collet 2-Die Set (neck sizing only) only resizes the neck, leaving the case body fire-formed to your specific chamber. This extends case life and can improve concentricity and accuracy by maintaining case-to-chamber fit. For maximum accuracy and case life in a dedicated bolt-action rifle, the collet die is often preferred.

Q: What is "neck tension" and why is it important?
A: Neck tension refers to the amount of force the case neck exerts on the bullet, holding it in place. Consistent neck tension is crucial because it directly influences "bullet pull"—the resistance the bullet encounters as it starts to move when fired. Variations in bullet pull can lead to variations in muzzle velocity, which negatively impacts accuracy, especially at longer ranges. The Lee Collet Neck Sizing Die is designed to provide consistent, optimal neck tension.

Q: Where can I purchase the Lee 90710 Collet 2-Die Set for 6mm Remington?
A: This essential die set for precision 6mm Remington reloading is available through DEGuns, a reputable dealer of quality reloading supplies.

Conclusion: A Foundation for Exceptional Ammunition

The Lee 90710 Collet 2-Die Set for 6mm Remington is more than just a pair of dies; it's an investment in the accuracy and longevity of your handloaded ammunition. By precisely controlling neck sizing and bullet seating, this set empowers reloaders to achieve a level of consistency that translates directly into tighter groups and extended case life. For the discerning shooter, hunter, or reloader who demands the absolute best from their 6mm Remington, this die set offers a clear path to superior performance. Embrace the benefits of collet sizing and elevate your reloading craft today. Secure your Lee 90710 Collet 2-Die Set for 6mm Remington at DEGuns and experience the difference precision makes.

Feature	Benefit	Specification
Collet Neck Sizing	Extends Case Life, Improves Concentricity	Part Number: 90710
Dead Length Seating	Consistent OAL, Precise Bullet Alignment	Caliber: 6mm Remington
No Case Lubrication	Cleaner Process, Time Saving	Die Type: 2-Die Set
Steel Construction	Durable, Long-Lasting Performance	UPC: 734410907100