Forster Products 300 Remington Ultra Mag Full Length Sizing Die
$58.34
If you're handloading for a 300 Remington Ultra Mag, the Forster Products 300 Remington Ultra Mag full length sizing die is built to help you produce consistent, concentric rounds every time you step up to the bench. Forster has earned a solid reputation among reloaders for precision manufacturing and attention to detail — and this full length sizing die reflects that commitment. It's designed to handle the demands of a magnum cartridge while keeping your cases properly aligned through the resizing process.
The die is machined from quality steel to tight tolerances, then hand-polished before and after heat-treating for a smooth, durable finish that resists wear and corrosion through thousands of rounds. That precision manufacturing translates to better case concentricity, which means tighter groups downrange and fewer runouts that can throw off your shots. Whether you're prepping brass for long-range target work or preparing hunting ammo for the field, consistent case geometry matters.
One feature that sets Forster sizing dies apart is their approach to the expander button. The E-Z Out Expander button is positioned higher in the neck area than you'll find on many competing dies. That positioning provides support and helps keep the case neck centered and aligned as the case is withdrawn from the die — a detail that contributes to the concentricity Forster is known for. The die also includes Forster's Cross Bolt Die Locking Ring, which tightens across the split ring rather than directly into the die threads, reducing stress on the die itself and improving alignment in your press.
This is a full length sizing die, so it will resize the case from the base to the neck in one operation — the standard choice for most reloaders working with bottleneck rifle cartridges like the 300 Rem Ultra Mag.
Key Features
- Full length sizing for the 300 Remington Ultra Mag cartridge
- Hand-polished before and after heat-treating for superior finish and durability
- E-Z Out Expander button positioned to support case neck concentricity during withdrawal
- Forster Cross Bolt Die Locking Ring for secure, stress-free mounting
- Precision-machined steel construction to tight tolerances
Specifications
| Product Type | Full Length Sizing Die |
| Caliber | 300 Remington Ultra Mag |
| Manufacturer | Forster Products |
| Material | Steel |
Frequently Asked Questions
What is a full length sizing die and when should I use one?
A full length sizing die resizes the case from the base all the way to the neck in one operation. It's the standard choice for most reloaders and works with any press that accepts standard die threads. Full length sizing is ideal for ammunition that will be fired in multiple firearms or for general-purpose handloading.
Will this die work with my reloading press?
This die uses standard die threads and will fit any single-stage or progressive reloader that accepts standard .540" diameter die bodies. Confirm your press is compatible with standard reloading dies before purchase.
What's included with the die?
The Forster 300 Rem Ultra Mag full length sizing die comes equipped with the E-Z Out Expander button and Forster's Cross Bolt Die Locking Ring for mounting to your press.
How do Forster dies contribute to better accuracy?
Forster dies are designed and machined to produce concentric cartridges — brass that is properly centered without runout. Consistent case concentricity reduces bullet jump and improves shot-to-shot uniformity, particularly important when precision matters, whether you're shooting groups at the range or hunting at distance.
