What reloading presses are compatible with the Redding 66153 300 Win Mag die set in Australia?

This die set features a standard 7/8"-14 thread pitch, making it fully compatible with almost all single-stage and progressive reloading presses available on the Australian market, including popular models from Redding, RCBS, Lyman, and Hornady.

Does this die set come with a shellholder included in the package?

No, a shellholder is not included with the Redding 66153 set and must be purchased separately. You will need a standard Redding #6 shellholder or an industry-equivalent magnum shellholder to securely hold your 300 Winchester Magnum brass during the resizing and seating operations.

Can this die set be used for other 30-calibre magnum cartridges like the 300 WSM or 300 PRC?

No, the Redding 66153 is strictly restricted to the 300 Winchester Magnum cartridge casing and a .308" bullet diameter. It cannot be used to size or reload other 30-calibre magnums such as the 300 WSM or 300 PRC due to differing case dimensions.

How precise are the adjustments on the bullet seating die?

The seating die is equipped with a micrometre head that allows for incredibly precise depth adjustments in calibrated 0.001" increments. This level of fine-tuning is crucial for achieving the exact bullet jump and overall cartridge length needed for match-grade accuracy.

300 Win Mag Die Set - Redding 66153

The Redding Premium Full Length 2-Die Set (.300 Winchester Magnum) is a mechanical reloading tool engineered to resize fired brass cases and seat projectiles to exact depths. Built for standard single-stage and progressive reloading presses using a standard 7/8"-14 thread pitch, this two-die set features a full-length sizing die equipped with a free-floating carbide expander button and a dedicated bullet seating die integrated with a precision micrometer head. It provides reliable chambering dimensions for hunting and target shooting while accommodating standard .308" diameter bullets.

Key Features

Two-Die Configuration: Includes one full-length sizing die to return fired cases to SAAMI/CIP dimensions and one bullet seating die.
Free-Floating Carbide Expander Button: Smooth-transition carbide button reduces friction and neck stretching during the sizing stroke without requiring inside-neck lube.
Bullet Seating Micrometer: Top-mounted micrometer provides direct bullet seating depth adjustments in 0.001" (0.025 mm) increments for precise cartridge overall length (COAL) tuning.
Unpowered Mechanical Operation: Requires no electrical power, operating entirely via standard reloading press leverage.

Specifications

Manufacturer Part Number (MPN): 66153
Calibre: .300 Winchester Magnum
Bullet Diameter Compatibility: .308"
Press Thread Pitch: Standard 7/8"-14
Shellholder Required: Redding #6 (or equivalent magnum shellholder, sold separately)
Packaged Weight: Approximately 0.6 kg to 0.7 kg (1.3 lbs to 1.5 lbs)

Who is the Redding Premium Full Length Die Set for .300 Win Mag for?

Sambar Deer and Large Game Hunters — requires reliable cycling in bolt-action rifles across field conditions, served by full-length sizing dies that restore cases to standard chamber dimensions using standard 7/8"-14 thread pitch presses to seat .308" diameter hunting projectiles.
Long-Range Target Shooters — requires exact control over cartridge overall length and bullet jump, which this 300 Win Mag reloading die set delivers via calibrated 0.001" micrometer adjustment increments on the seating stem.

Less suitable for: Handloaders seeking to resize other .30-calibre magnum cases like the .300 WSM or .300 PRC, which exceed this die set's fixed .300 Winchester Magnum case geometry threshold and require cartridge-specific full-length die sets; or handloaders requiring interchangeable neck-tension control, who are better served by a dedicated bushing-style sizing die.

SKU	RD102906LP
Model #	66153
Brand	Redding
Shipping Weight	0.2000kg

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Redding 66153 Die Set 300 Win Mag Carbide Expander Micrometer

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