Is the Redding 338 Win Mag Premium Series Full Length Die Set compatible with other .338 calibres like the .338 Lapua Magnum?

No, this die set (MPN 66163) is strictly calibrated exclusively for .338 Winchester Magnum brass cases. It is not compatible with other .338-calibre cartridges such as .338 Lapua Magnum or .338 RUM.

What extra accessories do I need to start operating this die set on my reloading press?

This 2-die set features an industry-standard 7/8"-14 TPI thread interface, but requires a separate Redding #6 Standard Shellholder or Competition Shellholder #11606 to function. You will also need to supply your own case lubricant for the outer case body prior to full-length sizing.

How precise is the bullet seating adjustment on the Redding 66163 die set?

The standard bullet seater die is topped with a precision bullet seating micrometer that allows for direct adjustments in 0.001-inch increments. This makes it straightforward to dial in and reliably repeat exact seating depths and bullet jump for match-grade accuracy.

Does this Redding reloading die set require any electrical compliance or SAA/RCM certification for use in Australian workshops?

No electrical compliance or SAA/RCM certification is applicable here. The Redding 66163 is a purely mechanical handloading tool operated manually via your reloading press, meaning mains power compatibility is not a factor.

338 Win Mag Die Set - Redding 66163

The Redding 338 Win Mag Premium Series Full Length Die Set (MPN 66163) is a precision 2-die reloading system engineered to resize .338 Winchester Magnum cases back to SAAMI factory specifications and seat projectiles with exacting depth control. Built around standard 7/8"-14 TPI threading to fit standard reloading presses, this set combines a full-length sizing die equipped with a free-floating carbide expander button and a dedicated bullet seating die topped with a precision micrometer stem.

Key Features

Carbide Expander Button: Integrated into the full-length decapping assembly to reduce neck friction and brass stretch, eliminating the need for inside-neck lube while enhancing case neck concentricity.
Bullet Seating Micrometer: Allows direct, repeatable bullet seating depth adjustments in distinct 0.001-inch increments for precise cartridge overall length (COAL) management.
Full-Length Resizing: Restores fired .338 Win Mag cases to factory dimensions to guarantee reliable cycling and chambering in bolt-action and hunting rifles.
Standard Press Interface: Machined with industry-standard 7/8"-14 TPI threads for compatibility with conventional single-stage and turret reloading presses.

Specifications

Calibre Compatibility: .338 Winchester Magnum
Die Set Composition: 2-Die Set (Full Length Sizer with Carbide Button, Seater with Micrometer Top)
Thread Interface: 7/8"-14 TPI
Adjustment Resolution: 0.001 inches (Seating Micrometer)
Shellholder Requirement: Redding #6 Standard Shellholder (Part #11006) or Competition Shellholder #11606 (sold separately)
Weight: Approximately 0.6–0.7 kg (including storage box)

Who is the Redding 338 Win Mag Premium Series Full Length Die Set for?

Precision Handloaders — Requires seating depth adjustments in exact 0.001-inch increments using this 338 Win Mag reloading die set to precisely tune bullet jump and optimize ballistic consistency.
Big Game Hunters — Needs 100% reliable cartridge feeding in field rifles by resizing fired .338 Winchester Magnum brass back to SAAMI dimensions with a full-length die on a 7/8"-14 TPI press interface.

Less suitable for: Other .338-calibre cartridges such as .338 Lapua Magnum or .338 Remington Ultra Magnum, handloaders requiring neck-only sizing without shoulder bumping who require a 3-die neck sizing set, or competitive shooters seeking custom neck-tension control who require a bushing full-length die system.

SKU	RD41704LP
Model #	66163
Brand	Redding
Shipping Weight	1.0000kg

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Redding 66163 Premium Series Die Set 338 Win Mag

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