ARC Ballistics .3365 Mandrel

1. Precision Neck Uniformity: The .3365 Mandrel is meticulously machined to ensure precise case neck uniformity, a critical factor for achieving optimal neck tension and concentricity. This results in superior bullet seating consistency, which translates directly to enhanced accuracy and tighter groups downrange.

2. Durable Hardened Steel Construction: Crafted from hardened steel, this mandrel resists wear and deformation even after extensive use. Its robust material ensures a long lifespan and maintains its exact dimensions, providing reliable performance for countless reloading cycles.

3. Optimized for Bullet Seating: By precisely expanding the case neck, the mandrel prepares the brass for smooth and consistent bullet seating. This reduces bullet runout, preventing deformed bullets and promoting uniform combustion for every shot, which is highly valued by serious precision shooters.

4. Part of a Comprehensive System: Designed to integrate seamlessly with ARC Ballistics' innovative case preparation tools, this mandrel is a key component in a system engineered for ballistic excellence. It reflects ARC Ballistics' commitment to providing tools that help handloaders extract the maximum potential from their ammunition.

ABOUT THE ARC BALLISTICS .3365 MANDREL

The ARC Ballistics .3365 Mandrel sets itself apart in the field of case preparation as a tool engineered for uncompromising precision, especially critical for today's demanding long-range shooting and hunting scenarios. Its primary function is to accurately expand the internal diameter of the case neck, standardizing neck tension across all your brass. This meticulous step is vital for achieving perfect bullet concentricity and consistent bullet seating force, directly impacting the accuracy and reliability of your handloaded ammunition. Crafted from precision-machined hardened steel, this mandrel guarantees exceptional durability and maintains its exacting dimensions over countless uses, ensuring a uniform application of force to the brass. For competitive shooters and serious hunters who demand absolute precision and reliability from their cartridges, the .3365 Mandrel is an indispensable addition, providing the foundation for superior ballistic performance shot after shot.

ABOUT ARC BALLISTICS

ARC Ballistics is renowned for its dedication to developing innovative ballistic tools that cater to the exacting demands of precision handloaders. With a strong reputation for American innovation, the company consistently delivers products that combine cutting-edge design with robust functionality. Known for their ballistic-focused precision tools, often praised in 2025 reviews for competition use, ARC Ballistics empowers reloaders to achieve unparalleled accuracy and consistency in their ammunition. Their philosophy centers on providing high-quality, reliable equipment that can withstand the rigors of frequent use while contributing significantly to improved shooting performance.

MAIN FEATURES

• Mandrel Diameter: .3365 inch, specifically engineered for precision case neck expanding.

• Material: Constructed from precision-machined hardened steel for exceptional durability and long-term performance.

• Compatibility: Designed for use with ARC Ballistics case neck expanding dies and compatible reloading presses, ensuring seamless integration into your case preparation workflow.

• Function: Optimizes neck tension and ensures perfect concentricity for improved bullet seating and consistent ballistic performance.

• Application: Ideal for handloaders seeking to achieve match-grade ammunition for competitive shooting, hunting, and precision long-range applications.

• Weight: Approximately 0.2 lbs (90 g), lightweight for easy handling and installation.

• Dimensions: Compact design for convenient storage and use.

WARRANTY

This product is covered by a 2-year global warranty that includes defects in materials and manufacturing under normal use.

IN THE BOX

• ARC Ballistics .3365 Mandrel

• Protective storage tube