Hornady Custom Grade Series IV 338-378 Weatherby Magnum Full Length 2-Die Set (546391) is a caliber-specific sizing and seating set made for reloaders working with the 338-378 Weatherby Magnum cartridge. This full length 2 die set suits big game hunters and long range shooters who want consistent brass sizing and precise bullet seating for powerful 338-378 Weatherby loads.
Key Features
- Manufacturer part number: 546391
- Cartridge: 338-378 Weatherby Magnum
- Caliber diameter: 0.338 inch bullets
- Die series: Custom Grade New Dimension, Series IV, rifle
- Number of dies: 2
- Included dies: full length sizing die and bullet seating die
- Die construction: machined steel
- Thread size: 7/8 inch by 14 to fit standard reloading presses
- Die type: full length sizer and in-line seating die
- Interior finish: polished internal surfaces for smooth case travel
- Bullet diameter compatibility: 0.338 inch projectiles used in 338-378 Weatherby
- Color: steel finish
- Packaging: plastic die box for storage and transport
Special Features
- Series IV Custom Grade geometry supports overbore magnum cartridges like 338-378 Weatherby Magnum with case dimensions matched to this specific chambering.
- Full length sizing die returns fired 338-378 Weatherby brass to proper dimensions for reliable feeding and chambering in hunting and long range rifles.
- Polished steel internals provide smooth sizing and reduce drag on the brass body and neck for easier press operation.
- Precision machined die bodies support better alignment between case and bullet for uniform seating and improved concentricity.
- Integrated crimp capability in the seating die lets you add a crimp during bullet seating when building heavy recoiling hunting loads.
- Standard 7/8 by 14 threads make this 338-378 Weatherby die set compatible with most single stage and turret presses.
- Custom Grade construction emphasizes durability so the dies withstand repeated use with large, high pressure magnum brass.
Practical Benefits
- This Hornady Custom Grade Series IV 338-378 Weatherby Magnum Full Length 2-Die Set (546391) fits reloaders who want a dedicated pair of dies to support a powerful 338-378 Weatherby hunting or long range rifle.
- Full length sizing supports dependable feeding and positive chambering in rifles that see tough field conditions and repeated cycling from box magazines.
- Smooth internal finishes help you size large 338-378 Weatherby cases with more control on the press handle and less wear on your brass.
- The dedicated seating die supports straight bullet starts and secure seating depth for long, heavy 0.338 inch bullets commonly used in long range and big game applications.
- If you handload for a 338-378 Weatherby Magnum rifle, the Hornady Custom Grade Series IV 338-378 Weatherby Magnum Full Length 2-Die Set (546391) is a capable tool for building accurate, consistent ammunition tailored to hard hitting magnum performance.
| MANUFACTURER | HORNADY |
| CALIBER | 338-378 WBY MAG |