Redding 73 Style Steel Bushing/.366

The Redding 73 Style Steel Bushing in .366" is a precision neck-sizing component built for reloaders who demand repeatable, consistent cartridge dimensions. This hardened steel bushing works with Redding's 73 reloading press system to control neck diameter during the sizing process, making it essential for handloaders pursuing accuracy-critical applications like long-range rifle and competition shooting.

Redding's 73 bushings are manufactured from heat-treated steel and hand-polished to exacting standards. The sizing diameter surfaces are hardened to Rc 60–62, a specification that reduces the physical effort required during the sizing stroke while maintaining dimensional stability across hundreds of reloads. This hardness also extends bushing life, so you're not replacing components every few hundred rounds.

The .366" bushing is one of dozens available in the 73 lineup; Redding manufactures bushings in .001" increments from .185" to .368", so you can fine-tune neck fit for virtually any rifle cartridge. Whether you're working with standard calibers or wildcats, there's a bushing in the range to match your brass. Simply swap the bushing in your 73 press die to change cartridge sizes—no need to buy separate dies for every caliber.

Key Features

• Heat-treated steel construction with hardened sizing surfaces (Rc 60–62)
• Hand-polished dimensions for smooth, consistent sizing action
• Designed for use with Redding 73 reloading press dies
• Reduces operator effort during the sizing stroke
• Extended service life due to surface hardness
• Part of a comprehensive lineup of sizing bushings in .001" increments

Specifications

Frequently Asked Questions

What calibers does the .366" Redding 73 bushing work with?

The .366" bushing is designed for cartridges with a .366" neck diameter. Redding manufactures 73 bushings in .001" increments across a wide size range, so you can find the exact bushing your cartridge requires. If you're unsure which size your rifle needs, measure your resized brass neck diameter and select the bushing closest to that specification.

Do I need a separate die for each caliber if I use 73 bushings?

No. The Redding 73 system lets you swap bushings within the same die body, so you can resize different cartridges without purchasing separate dies for each caliber. Simply remove the old bushing and install the new one.

What press is this bushing compatible with?

This bushing is designed for use with Redding 73 reloading press dies. Make sure your reloading die is a 73-style die before purchasing.

How long will a Redding 73 bushing last?

The hand-polished, hardened steel construction (Rc 60–62) is engineered for durability and extended service life compared to softer materials. Expected lifespan varies with use frequency and maintenance, but the hardness specification is designed to withstand hundreds of sizing cycles.