The RCBS Full-Length Die Set for 6.5-300 Weatherby Magnum (RCBS part no. 31701) is a two-die bottleneck reloading set built to bring fired brass back to SAAMI minimum dimensions in a single pass. It pairs a Full-Length Sizer Die with a built-in expander-decapping unit and a Seater Die with a Bullet Seater Plug, giving handloaders complete resizing and bullet seating from one RCBS set. It’s designed specifically for 6.5-300 Weatherby Magnum bottleneck cases, so brass comes out consistent, load after load.

Key Specifications

• The set includes a Full-Length Sizer Die with a built-in expander-decapping unit and a Seater Die with a bullet seater plug, covering full resizing and bullet seating in one two-die set.
• Full-length sizing brings the case to SAAMI minimum cartridge dimensions on the outside diameter for reliable chambering.
• The sizer die is vented to relieve trapped air and excess case lube during sizing, which helps prevent dented cases.
• Headspace is held to minimum tolerances so full-length sizing does not stretch or shorten case body length over repeated reloads.
• The Seater Die has a built-in roll crimper that secures the bullet at the same time it is seated, eliminating a separate crimping step.
• The set uses a standard 7/8-14 thread, so it mounts directly into nearly any single-stage or turret press.

Frequently Asked Questions

What cartridge is this RCBS die set machined for? This set is built specifically for 6.5-300 Weatherby Magnum bottleneck brass and full-length sizes cases to SAAMI minimum dimensions.

Does the set include a separate crimping die? No. The Seater Die has a built-in roll crimper, so it seats and crimps the bullet in the same step without an extra die.

Buy the RCBS 6.5-300 Weatherby Magnum Full-Length Die Set

Order the RCBS Full-Length Die Set for 6.5-300 Weatherby Magnum from RCBS‘s reloading dies lineup — ships fast from our Lubbock, TX gun shop, direct to your reloading bench.