RCBS Full Length Die Set for .375 H&H Mag Reloading

Handloading .375 H&H Magnum ammunition demands precision tools that respect tight tolerances and heavy-duty case work. The RCBS Full Length Die Set for .375 H&H Mag gives you the essential two-die setup to resize, deprime, and seat bullets with the control serious .375 shooters need. This is the workhorse combination for hunters and long-range shooters who want consistent, safe rounds from premium brass.

The full-length sizer die handles the heavy lifting: it brings your fired cases back to SAAMI minimum dimensions, resizes the case body, removes spent primers, and opens the neck to accept a fresh bullet. RCBS engineered this die with internal vents that protect your brass from the damage caused by trapped air and excess lubricant—details that matter when you're reloading expensive magnum cases. You'll hold headspace to minimum tolerances, ensuring your case body length stays true and your cartridges maintain the reliability that .375 hunting demands.

The seater die completes the cycle with a built-in roll crimper, so your bullet gets seated and secured in one smooth stroke. That integrated crimp is especially valuable for magnum rounds, where solid bullet retention is non-negotiable during firing and recoil. Together, these two dies give you a complete, efficient workflow for producing match-grade ammo in one of hunting's most respected calibers.

Key Features

• Two-die set sized specifically for .375 H&H Mag bottleneck cases
• Full-length sizer die with integrated expander-decapping unit
• Seater die with built-in roll crimper for single-stroke bullet seating and securing
• Vented design prevents case damage from trapped air and excess lubricant
• Headspace controlled to SAAMI minimum tolerances for consistent case dimensions

Specifications

Frequently Asked Questions

Will this die set work with my fired .375 H&H brass?

Yes. The full-length sizer die resizes fired cases back to SAAMI minimum dimensions and removes spent primers, preparing your brass for fresh bullet seating. It's designed for bottleneck .375 H&H cases.

Does the seater die crimp the bullet?

Yes. The seater die includes a built-in roll crimper, so your bullet is seated and secured in a single stroke. This integrated crimp is especially useful for magnum ammunition where reliable bullet retention is critical.

What's included in this two-die set?

The set includes a full-length sizer die with an expander-decapping unit (for resizing and depriming) and a seater die with integrated bullet seater plug and roll crimper.

Why do the dies have internal vents?

The vents prevent case damage caused by trapped air during the sizing stroke and help manage excess lubricant. This protection is especially important when working with premium magnum brass that you plan to reload multiple times.