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Redding Reloading Equipment
The Redding Competition Bushing Neck 3-Die Set for .300 Win Mag delivers the precision and consistency that serious rifle reloaders demand. This three-die set is engineered for shooters who won't compromise on neck-sizing accuracy, whether you're loading match rounds for competition or fine-tuning hunting ammunition. If you're ready to step up from full-length sizing to the tighter control that bushing neck sizing offers, this set gives you the tools to do it right.
The Competition Bushing Neck Die is the heart of this system. Your case sits fully supported and aligned before sizing begins, then remains cradled in a precision-chambered sliding sleeve as it moves upward. The sizing bushing self-centers on the neck—no chasing geometry, no concentricity guesswork. A micrometer adjustment lets you dial in exactly how much neck length gets sized, giving you repeatable control that translates directly to shot-to-shot consistency. The decapping rod stays in rigid alignment throughout, referenced by the die's internal structure like a firing pin in its channel.
The Body Die handles full-length resizing of the case body and bumps the shoulder back for reliable chambering, all without touching your already-sized neck. That's the whole point: once your neck is perfect, the body die leaves it alone. The Competition Bullet Seater finishes the job with a floating stem system machined to tolerances tight enough that the stem literally floats within its guide—that precision in the seating geometry means your bullets seat consistently and coaxially, round after round.
Note that bushings and shellholder are sold separately, so you'll need to source those to complete your setup. If you're already familiar with bushing-neck sizing and want a competition-grade die set for .300 Win Mag, this is a legitimate choice for handloaders serious about precision.
| Caliber | .300 Win Mag |
| Set Contents | Competition Bushing Neck Sizing Die, Body Die, Competition Bullet Seater |
| Neck Die Adjustment | Micrometer |
| Seater Adjustment | Micrometer |
| Sizing Method | Bushing neck sizing |
| Case Support | Full case support and alignment during sizing |
| Included Accessories | Dies only; bushings and shellholder sold separately |
Bushings and shellholder are sold separately. You'll need to source them based on your .300 Win Mag requirements and your press setup. Consult Redding's bushing and shellholder compatibility charts for the correct sizes.
Bushing neck sizing sizes only the case neck using an interchangeable bushing, leaving the body and shoulder untouched after the body die's single shoulder bump. This preserves case dimensions more precisely than full-length sizing and can extend case life while improving concentricity and consistency—benefits most valuable for competition and precision rifle ammunition.
Yes. Bushing neck sizing is suitable for any .300 Win Mag application. The precision control built into this set works equally well for competition target loads and hunting ammunition.
No. This is a die set only. You'll need a compatible reloading press (not included) to use these dies.
Redding Reloading Equipment
The Redding Competition Bushing Neck 3-Die Set for .300 Win Mag delivers the precision and consistency that serious rifle reloaders demand. This three-die set is engineered for shooters who won't compromise on neck-sizing accuracy, whether you're loading match rounds for competition or fine-tuning hunting ammunition. If you're ready to step up from full-length sizing to the tighter control that bushing neck sizing offers, this set gives you the tools to do it right.
The Competition Bushing Neck Die is the heart of this system. Your case sits fully supported and aligned before sizing begins, then remains cradled in a precision-chambered sliding sleeve as it moves upward. The sizing bushing self-centers on the neck—no chasing geometry, no concentricity guesswork. A micrometer adjustment lets you dial in exactly how much neck length gets sized, giving you repeatable control that translates directly to shot-to-shot consistency. The decapping rod stays in rigid alignment throughout, referenced by the die's internal structure like a firing pin in its channel.
The Body Die handles full-length resizing of the case body and bumps the shoulder back for reliable chambering, all without touching your already-sized neck. That's the whole point: once your neck is perfect, the body die leaves it alone. The Competition Bullet Seater finishes the job with a floating stem system machined to tolerances tight enough that the stem literally floats within its guide—that precision in the seating geometry means your bullets seat consistently and coaxially, round after round.
Note that bushings and shellholder are sold separately, so you'll need to source those to complete your setup. If you're already familiar with bushing-neck sizing and want a competition-grade die set for .300 Win Mag, this is a legitimate choice for handloaders serious about precision.
| Caliber | .300 Win Mag |
| Set Contents | Competition Bushing Neck Sizing Die, Body Die, Competition Bullet Seater |
| Neck Die Adjustment | Micrometer |
| Seater Adjustment | Micrometer |
| Sizing Method | Bushing neck sizing |
| Case Support | Full case support and alignment during sizing |
| Included Accessories | Dies only; bushings and shellholder sold separately |
Bushings and shellholder are sold separately. You'll need to source them based on your .300 Win Mag requirements and your press setup. Consult Redding's bushing and shellholder compatibility charts for the correct sizes.
Bushing neck sizing sizes only the case neck using an interchangeable bushing, leaving the body and shoulder untouched after the body die's single shoulder bump. This preserves case dimensions more precisely than full-length sizing and can extend case life while improving concentricity and consistency—benefits most valuable for competition and precision rifle ammunition.
Yes. Bushing neck sizing is suitable for any .300 Win Mag application. The precision control built into this set works equally well for competition target loads and hunting ammunition.
No. This is a die set only. You'll need a compatible reloading press (not included) to use these dies.
