
Availability: In Stock
The RCBS AR Small Base Die Set for .338 Federal gives you the two essential dies needed to reload ammunition for your AR-platform rifle. This matched pair includes a small base sizer die and a taper crimp seater die, designed together to produce rounds that chamber reliably in semiautomatic rifles. If you're handloading .338 Federal for an AR, this set delivers the precision fit that matters when feeding from a magazine.
Small base dies are purpose-built for semiautomatic rifles, where tighter tolerances keep cases feeding and extracting smoothly through the action. The sizer die in this set brings fired cases down to those exacting dimensions, while the taper crimp seater seats your bullet and applies a controlled crimp in one step. RCBS stands behind the quality of its reloading dies with the machining and materials that have made the brand a reloader's standard for decades.
Whether you're working up loads for precision shooting, hunting, or high-volume practice, having dies matched specifically to your rifle's action removes guesswork. The .338 Federal is a solid intermediate cartridge for AR shooters, and this die set gives you the tool confidence to produce ammo that feeds and performs as intended.
| Brand | RCBS |
| Cartridge | .338 Federal |
| Die Type | Small Base Die Set |
| Includes | Small Base Sizer Die, Taper Crimp Seater Die |
| Application | Semiautomatic rifle reloading |
Small base dies size cases to tighter tolerances designed for semiautomatic rifles, where stricter chamber fits are necessary for reliable feeding and extraction. Standard dies size to minimum safe specifications suited to bolt-action and single-shot rifles.
Yes. This RCBS AR Small Base Die Set is specifically designed to reload .338 Federal ammunition for AR-platform rifles. The small base sizer die ensures cases will chamber and feed reliably in your semiautomatic rifle.
The set contains a small base sizer die and a taper crimp seater die. These two dies complete the reloading process: sizing the fired case and seating the bullet with a controlled crimp.
Yes, these dies are designed to be used with a reloading press. You will also need a powder measure, scale, calipers, and other standard reloading equipment to complete the process.

SKU: 167522160 • Width: 5.55in • Height: 1.8in • Depth: 5.95in • Weight: 1.2188oz





Availability: In Stock
The RCBS AR Small Base Die Set for .338 Federal gives you the two essential dies needed to reload ammunition for your AR-platform rifle. This matched pair includes a small base sizer die and a taper crimp seater die, designed together to produce rounds that chamber reliably in semiautomatic rifles. If you're handloading .338 Federal for an AR, this set delivers the precision fit that matters when feeding from a magazine.
Small base dies are purpose-built for semiautomatic rifles, where tighter tolerances keep cases feeding and extracting smoothly through the action. The sizer die in this set brings fired cases down to those exacting dimensions, while the taper crimp seater seats your bullet and applies a controlled crimp in one step. RCBS stands behind the quality of its reloading dies with the machining and materials that have made the brand a reloader's standard for decades.
Whether you're working up loads for precision shooting, hunting, or high-volume practice, having dies matched specifically to your rifle's action removes guesswork. The .338 Federal is a solid intermediate cartridge for AR shooters, and this die set gives you the tool confidence to produce ammo that feeds and performs as intended.
| Brand | RCBS |
| Cartridge | .338 Federal |
| Die Type | Small Base Die Set |
| Includes | Small Base Sizer Die, Taper Crimp Seater Die |
| Application | Semiautomatic rifle reloading |
Small base dies size cases to tighter tolerances designed for semiautomatic rifles, where stricter chamber fits are necessary for reliable feeding and extraction. Standard dies size to minimum safe specifications suited to bolt-action and single-shot rifles.
Yes. This RCBS AR Small Base Die Set is specifically designed to reload .338 Federal ammunition for AR-platform rifles. The small base sizer die ensures cases will chamber and feed reliably in your semiautomatic rifle.
The set contains a small base sizer die and a taper crimp seater die. These two dies complete the reloading process: sizing the fired case and seating the bullet with a controlled crimp.
Yes, these dies are designed to be used with a reloading press. You will also need a powder measure, scale, calipers, and other standard reloading equipment to complete the process.
SKU: 167522160 • Width: 5.55in • Height: 1.8in • Depth: 5.95in • Weight: 1.2188oz
