RCBS 7x57mm Mauser Full Length Reloading Die Set
$55.16
$55.95
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$0.79
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The RCBS 7x57mm Mauser full length reloading die set gives you everything you need to reload this classic European cartridge. Whether you're working with vintage Mauser rifles or modern reproductions, this two-die setup handles the full process—from decapping and sizing fired cases to seating bullets with repeatable precision. RCBS designed this set specifically for 7x57 Mauser bottleneck cases, so you get the exact dimensions and tolerances your rifle expects.
Full length sizing brings your cases back to SAAMI minimum specifications, which is especially important if you're loading for multiple firearms or want consistent, reliable functioning across chambers. The included Full-Length Sizer Die does the heavy lifting: it sizes the case body, removes the spent primer with the integrated Expander-Decapping Unit, and opens the neck to accept your bullet. RCBS engineered vents into the die to prevent air trapping and manage lubricant, protecting your cases from damage during the sizing stroke. Headspace is controlled tight to avoid stretching the case body, which preserves brass life and keeps your reloads dimensionally consistent.
The Seater Die includes a built-in roll crimper, so you seat the bullet and secure it in one stroke—no separate crimping step needed. That efficiency matters when you're working through a batch of loads. Both dies use the standard 7/8-inch-14 thread, fitting any standard press you already own.
Key Features
- Two-die set covers full length sizing and bullet seating in one kit
- Full-Length Sizer Die with integrated Expander-Decapping Unit removes primers and opens necks
- Seater Die with built-in roll crimper seats and secures bullets in a single stroke
- Vented dies prevent case damage from trapped air and excess lubricant
- Headspace held to minimum tolerances for consistent case dimensions
- Standard 7/8-inch-14 thread fits any standard reloading press
Specifications
| Caliber | 7x57mm Mauser |
| Die Thread | 7/8-inch-14 (standard) |
| Set Configuration | Full-Length Sizer Die and Seater Die |
| Sizer Die Features | Expander-Decapping Unit, vented design |
| Seater Die Features | Built-in roll crimper, bullet seater plug |
Frequently Asked Questions
Will this die set work with my 7x57 Mauser rifle?
Yes. This set is designed specifically for 7x57 Mauser bottleneck cases and sizes them to SAAMI minimum dimensions for proper function and reliability in 7x57 Mauser rifles.
Do I need a separate crimper, or is crimping included?
The Seater Die includes a built-in roll crimper, so you seat and crimp in a single operation. No separate step or tool required.
What press will these dies fit?
Both dies use the standard 7/8-inch-14 thread, which fits any standard reloading press—single-stage, turret, or progressive—that accepts dies with this thread size.
What's included in the set?
The set includes a Full-Length Sizer Die with Expander-Decapping Unit and a Seater Die with bullet seater plug and roll crimper.
