Redding 73 Style Steel Bushing/.339

The Redding 73 Style Steel Bushing/.339 is a precision neck-sizing component built for reloaders who demand consistency and control in their ammunition production. If you're running a progressive or single-stage press with a Redding Type S or similar bushing-style die setup, this .339" bushing allows you to fine-tune neck tension to match your specific cartridge, bullet, and firearm combination — a critical step for match-grade ammo or hunting loads where runout and bullet concentricity matter.

These bushings are manufactured from heat-treated steel and hand-polished to a surface hardness of Rc 60–62, which reduces the effort required to size cases while maintaining durability through thousands of rounds. The polished sizing diameter helps your cases move smoothly through the bushing with minimal marring, and the hardness ensures the bushing resists wear and maintains a consistent sizing diameter over time. Available in .001" increments across the full range from .185" to .368", the Redding bushing system lets you dial in neck clearance precisely — essential if you're chasing tight groups or working up loads for a new rifle.

Installation is straightforward: the bushing slides into a standard Redding Type S die or compatible aftermarket die body. Because neck tension affects bullet seating pressure, ignition consistency, and case life, having the right bushing size for your setup pays dividends in shot-to-shot reliability and ease of operation at the bench.

Key Features

• Heat-treated steel construction with hand-polished sizing diameter
• Hardness of Rc 60–62 reduces sizing effort and resists wear
• Precise .339" diameter for .339-caliber cartridges
• Part of Redding's full bushing range (.001" increments, .185" to .368")
• Compatible with standard Redding Type S die bodies

Specifications

Frequently Asked Questions

What reloading press and die setup does this bushing fit?

The Redding 73 Style bushing is designed to work with Redding Type S or compatible bushing-style die bodies. It slides into the die body to control neck sizing diameter. Check your die documentation to confirm compatibility.

What cartridges use a .339" bushing?

The .339" bushing is sized for .339-caliber cartridges. Verify your specific cartridge's neck diameter before ordering — if you're unsure which bushing you need, consult a reloading manual or contact Redding directly.

How does neck bushing size affect my reloading process?

The bushing diameter controls how much the case neck is compressed around the bullet. The right size ensures consistent neck tension, which improves bullet seating pressure, powder burn consistency, and overall ammunition precision. Too tight, and you'll work harder at the press; too loose, and bullet runout and ignition consistency suffer.

Are bushings available in other sizes?

Yes. Redding produces bushings in .001" increments from .185" to .368". If .339" isn't your size, check the Redding bushing chart to find the correct diameter for your cartridge.