L.E. Wilson Bushing Type Full Length Sizing Die 300 Norma Mag
The L.E. Wilson Bushing Type Full Length Sizing Die for 300 Norma Mag gives precision reloaders control over neck tension while sizing the case body in a single pass. This die is built around Wilson's bushings system—a proven approach that lets you dial in the exact amount of neck squeeze your ammunition demands. Unlike full-neck sizing, these dies leave the bottom 3/16" of the case neck unsized, a technique many long-range and match shooters prefer for improved accuracy and case longevity.
Wilson's bushing dies are machined from heat-treated steel hardened to specifications that exceed Grade 8 bolts, ensuring they'll handle thousands of rounds without wearing out. The die includes an adjustable depth decapping rod and comes with an extra decapping punch, so you're ready to start sizing fired brass immediately. Stainless steel components resist corrosion in the reloading bench environment, and the robust lock nut—thicker and more durable than standard—maintains zero shift over repeated use.
This is a full-length bushing die, meaning it sizes both the shoulder and body dimensions alongside neck control. It threads into standard 7/8" reloading presses and works as part of Wilson's modular bushing ecosystem. The bushings themselves are sold separately, allowing you to experiment with different neck tensions or maintain multiple setups for different load weights. L.E. Wilson bushings fit the die; Redding bushings are also compatible if you prefer alternatives.
Key Features
- Full-length sizing die with bushing-controlled neck tension
- Leaves bottom 3/16" of case neck unsized for improved accuracy
- Heat-treated steel hardened beyond Grade 8 specifications
- Adjustable depth decapping rod with spare decapping punch included
- Stainless steel components for durability and corrosion resistance
- Durable lock nut designed to prevent zero shift
- Standard 7/8" press compatibility
- Interchangeable bushing system for load tuning
- Sizes shoulder and body dimensions in one pass
Specifications
| Product Type | Full Length Bushing Sizing Die |
| Caliber | 300 Norma Mag |
| Manufacturer | L.E. Wilson |
| Press Compatibility | Standard 7/8" reloading press |
| Material | Heat-treated steel |
| Neck Sizing | Leaves bottom 3/16" of case neck unsized |
| Included Components | Adjustable depth decapping rod, extra decapping punch |
| Lock Nut Dimensions | 0.225" thickness (inside to outside edge), 0.270" height, 1.250" OD width |
| Bushings | Sold separately; L.E. Wilson and Redding bushings compatible |
Frequently Asked Questions
What bushing size do I need for my 300 Norma Mag?
Bushings are sold separately. L.E. Wilson bushings are designed for this die, and Redding bushings will also fit. Choose a bushing size based on your desired neck tension—this is part of the fine-tuning process many precision reloaders use to optimize accuracy for their specific rifle and load combination.
What press will this die fit?
This die threads into any standard reloading press with 7/8" die ports, which covers the vast majority of single-stage presses used for rifle reloading.
Does the die come ready to use?
The die arrives with an adjustable depth decapping rod and an extra decapping punch, so you can start sizing fired brass right away. You will need to purchase a bushing separately to complete the system.
Why leave the bottom of the case neck unsized?
Leaving approximately 3/16" of the case neck unsized is a practice many shooters—particularly those focused on accuracy—prefer because it can improve concentricity and reduce sizing-induced stress on the case, which some find enhances precision.

