The Redding Competition Bushing Neck Die for 300 Win Mag is engineered for shooters who demand precision and consistency in their handloaded ammunition. Purpose-built for competitive shooters who have carefully prepared their brass, this neck die uses a bushing-based sizing system that gives you direct control over how much neck diameter gets sized on each case. Unlike standard neck dies, the Competition Bushing design supports and aligns your cartridge case from the moment it enters the die, then holds it steady in a tightly chambered sliding sleeve as the resizing bushing self-centers on the case neck. This controlled approach is ideal if you're working with premium, matched brass and want to avoid the aggressive sizing a typical button produces.

What sets this die apart is its precision engineering. The decapping rod stays locked in alignment using the die's internal structure as a linear guide—similar to how a firing pin centers itself—so each case is processed with repeatable accuracy. The micrometer adjustment lets you fine-tune the bushing position to control neck sizing length with the repeatability competitive reloaders demand. Whether you're loading for a precision rifle match or a benchrest competition, this is the tool for shooters who've invested time in case prep and want that work to pay off in tighter groups.

Keep in mind that bushings and shellholders are sold separately, so you'll need to source the correct bushing size for your 300 Win Mag cases and a compatible shellholder to get started. This die assumes you're already familiar with the benefits of bushing-style neck sizing and aren't looking for a sizing button solution—though Redding does offer carbide button kits separately if your needs change down the road.

The Redding Competition Bushing Neck Die for 300 Win Mag is engineered for shooters who demand precision and consistency in their handloaded ammunition. Purpose-built for competitive shooters who have carefully prepared their brass, this neck die uses a bushing-based sizing system that gives you direct control over how much neck diameter gets sized on each case. Unlike standard neck dies, the Competition Bushing design supports and aligns your cartridge case from the moment it enters the die, then holds it steady in a tightly chambered sliding sleeve as the resizing bushing self-centers on the case neck. This controlled approach is ideal if you're working with premium, matched brass and want to avoid the aggressive sizing a typical button produces.

What sets this die apart is its precision engineering. The decapping rod stays locked in alignment using the die's internal structure as a linear guide—similar to how a firing pin centers itself—so each case is processed with repeatable accuracy. The micrometer adjustment lets you fine-tune the bushing position to control neck sizing length with the repeatability competitive reloaders demand. Whether you're loading for a precision rifle match or a benchrest competition, this is the tool for shooters who've invested time in case prep and want that work to pay off in tighter groups.

Keep in mind that bushings and shellholders are sold separately, so you'll need to source the correct bushing size for your 300 Win Mag cases and a compatible shellholder to get started. This die assumes you're already familiar with the benefits of bushing-style neck sizing and aren't looking for a sizing button solution—though Redding does offer carbide button kits separately if your needs change down the road.