
Availability: In Stock
The RCBS 22401 full-length 2-die set for 300 Blackout is the foundational tool kit for reloaders who want consistent, reliable ammunition. Whether you're working up loads for subsonic hunting, suppressed shooting, or precision rifle work, this Group D die set handles the essential steps of case preparation and bullet seating. Full-length sizing is the go-to approach for shooters who move ammunition between rifles or want maximum case life and reliability across multiple firearms.
This die set sizes your entire case—bumping the shoulder to spec and reducing body diameter so rounds chamber smoothly—while simultaneously decapping the spent primer in one efficient stroke. The expander ball sizes the neck to the right tension for bullet seating, ensuring consistent ignition and accuracy. The included seater die seats bullets to precise depth and features an adjustable crimp ring, so you can crimp or skip it based on your load design. That flexibility matters when you're fine-tuning for competition, hunting, or plinking.
RCBS dies are built to last. Many reloaders run the same full-length die set through multiple barrel life cycles without replacement. If you're new to reloading, this is the type of foundational kit that teaches you the discipline and technique you'll rely on for years. It's a smart, economical starting point before exploring specialty dies or alternative methods.
| Product Name | RCBS 22401 Full-Length 2-Die Set for 300 Blackout |
| Caliber | 300 Blackout |
| Die Type | Full-Length Sizing and Seating (2-Die Set) |
| Die Group | Group D |
| Includes | Full-length sizing die with decapper, seater die with crimp ring |
Yes. Cases must be lubricated before full-length sizing to protect the case and die and ensure smooth operation.
Yes. The seater die will seat bullets correctly in both full-length sized cases and neck-sized cases, giving you flexibility in your reloading approach.
The seater die has a built-in crimp ring that you can engage or disengage by raising or lowering the die position in your press. This lets you crimp or skip crimping to match your load design.
We recommend using a cartridge headspace gage tool to dial in the correct shoulder bump. This ensures your loads chamber reliably and gives you repeatable results.

SKU: 121687148 • Width: 4.5in • Height: 1.7in • Depth: 5.9in • Weight: 1.15oz
Availability: In Stock
The RCBS 22401 full-length 2-die set for 300 Blackout is the foundational tool kit for reloaders who want consistent, reliable ammunition. Whether you're working up loads for subsonic hunting, suppressed shooting, or precision rifle work, this Group D die set handles the essential steps of case preparation and bullet seating. Full-length sizing is the go-to approach for shooters who move ammunition between rifles or want maximum case life and reliability across multiple firearms.
This die set sizes your entire case—bumping the shoulder to spec and reducing body diameter so rounds chamber smoothly—while simultaneously decapping the spent primer in one efficient stroke. The expander ball sizes the neck to the right tension for bullet seating, ensuring consistent ignition and accuracy. The included seater die seats bullets to precise depth and features an adjustable crimp ring, so you can crimp or skip it based on your load design. That flexibility matters when you're fine-tuning for competition, hunting, or plinking.
RCBS dies are built to last. Many reloaders run the same full-length die set through multiple barrel life cycles without replacement. If you're new to reloading, this is the type of foundational kit that teaches you the discipline and technique you'll rely on for years. It's a smart, economical starting point before exploring specialty dies or alternative methods.
| Product Name | RCBS 22401 Full-Length 2-Die Set for 300 Blackout |
| Caliber | 300 Blackout |
| Die Type | Full-Length Sizing and Seating (2-Die Set) |
| Die Group | Group D |
| Includes | Full-length sizing die with decapper, seater die with crimp ring |
Yes. Cases must be lubricated before full-length sizing to protect the case and die and ensure smooth operation.
Yes. The seater die will seat bullets correctly in both full-length sized cases and neck-sized cases, giving you flexibility in your reloading approach.
The seater die has a built-in crimp ring that you can engage or disengage by raising or lowering the die position in your press. This lets you crimp or skip crimping to match your load design.
We recommend using a cartridge headspace gage tool to dial in the correct shoulder bump. This ensures your loads chamber reliably and gives you repeatable results.
SKU: 121687148 • Width: 4.5in • Height: 1.7in • Depth: 5.9in • Weight: 1.15oz
