
Availability: In Stock
Current Stock: Out of stock
The Lyman Deluxe Rifle 3-Die Set for .300 Win Magnum is built for reloaders who want to maximize case life without sacrificing reliability. This three-die set combines the efficiency of a full-length sizing die and bullet seating die with the precision of a dedicated neck sizing die—giving you the flexibility to reload with either method depending on your needs and how much brass life you want to squeeze out of your investment.
Neck sizing dies are a game-changer for handloaders who fire from the same rifle repeatedly. By sizing only the neck of the case rather than the entire case body, you work the brass less, reduce case hardening, and extend the number of reloads you can get before retiring it. The Deluxe Carbide Expander Assembly included in this set delivers smooth, consistent case prep. If you're running .300 Win Mag through a precision rifle or hunting setup where you're loading the same brass over and over, this set gives you the tool flexibility to work smarter with your ammo.
Lyman has engineered these dies for straightforward setup and consistent performance across a full production run. This is the kind of core reloading equipment that works in any shop—whether you're at a single-stage press turning out match rounds or managing volume on a progressive. The .300 Win caliber demands solid engineering, and Lyman delivers that here without unnecessary complexity.
| Caliber | .300 Win Magnum |
| Die Count | 3 |
| Included Dies | Full Length Sizing Die, Neck Sizing Die, Bullet Seating Die |
| Expander Type | Deluxe Carbide Expander Assembly |
| Brand | Lyman |
The full-length sizing die sizes the entire case body and neck, which is standard for most reloading and works well across different rifles or after your brass has been fired in multiple firearms. The neck sizing die resizes only the neck of the case, which reduces overall brass work and stress. Neck sizing extends case life when you're loading for a single rifle fired repeatedly—common practice in precision rifle and hunting applications. This set gives you both options.
These dies are designed as standard rifle dies and will fit any standard reloading press that accepts .300 Win Magnum dies. Verify your press has the appropriate mounting thread before ordering.
The set includes the full-length sizing die, neck sizing die, bullet seating die, and the Deluxe Carbide Expander Assembly. Powder measure, shell holder, and press are not included.
Case life depends on many factors including powder charge, primer type, firing conditions, and how aggressively you're working the brass. Using the neck sizing die instead of full-length sizing on brass fired in the same rifle will generally extend reusable life compared to full-length sizing, but we cannot guarantee a specific number of reloads.

SKU: 167524649 • Width: 4.65in • Height: 1.9in • Depth: 5.95in • Weight: 1.7375oz





Availability: In Stock
Current Stock: Out of stock
The Lyman Deluxe Rifle 3-Die Set for .300 Win Magnum is built for reloaders who want to maximize case life without sacrificing reliability. This three-die set combines the efficiency of a full-length sizing die and bullet seating die with the precision of a dedicated neck sizing die—giving you the flexibility to reload with either method depending on your needs and how much brass life you want to squeeze out of your investment.
Neck sizing dies are a game-changer for handloaders who fire from the same rifle repeatedly. By sizing only the neck of the case rather than the entire case body, you work the brass less, reduce case hardening, and extend the number of reloads you can get before retiring it. The Deluxe Carbide Expander Assembly included in this set delivers smooth, consistent case prep. If you're running .300 Win Mag through a precision rifle or hunting setup where you're loading the same brass over and over, this set gives you the tool flexibility to work smarter with your ammo.
Lyman has engineered these dies for straightforward setup and consistent performance across a full production run. This is the kind of core reloading equipment that works in any shop—whether you're at a single-stage press turning out match rounds or managing volume on a progressive. The .300 Win caliber demands solid engineering, and Lyman delivers that here without unnecessary complexity.
| Caliber | .300 Win Magnum |
| Die Count | 3 |
| Included Dies | Full Length Sizing Die, Neck Sizing Die, Bullet Seating Die |
| Expander Type | Deluxe Carbide Expander Assembly |
| Brand | Lyman |
The full-length sizing die sizes the entire case body and neck, which is standard for most reloading and works well across different rifles or after your brass has been fired in multiple firearms. The neck sizing die resizes only the neck of the case, which reduces overall brass work and stress. Neck sizing extends case life when you're loading for a single rifle fired repeatedly—common practice in precision rifle and hunting applications. This set gives you both options.
These dies are designed as standard rifle dies and will fit any standard reloading press that accepts .300 Win Magnum dies. Verify your press has the appropriate mounting thread before ordering.
The set includes the full-length sizing die, neck sizing die, bullet seating die, and the Deluxe Carbide Expander Assembly. Powder measure, shell holder, and press are not included.
Case life depends on many factors including powder charge, primer type, firing conditions, and how aggressively you're working the brass. Using the neck sizing die instead of full-length sizing on brass fired in the same rifle will generally extend reusable life compared to full-length sizing, but we cannot guarantee a specific number of reloads.
SKU: 167524649 • Width: 4.65in • Height: 1.9in • Depth: 5.95in • Weight: 1.7375oz
