The Redding #19 Bullet Seating Micrometer (MPN 09079) is a mechanical die upgrade engineered to provide micro-adjustable depth control for metallic cartridge reloading. Designed as a direct drop-in replacement for standard non-micrometer seating plugs stamped #19, this unit threads directly into compatible seating dies using standard 1/2"-20 threads. It allows handloaders to adjust cartridge overall length (COAL) in clear 0.001-inch increments, ensuring precise bullet positioning relative to the rifle's rifling lands across standard ogive projectiles.

Key Features

• Precision Micrometer Adjustment: Indexed in clear 0.001-inch graduations to enable fine-tuned bullet seating depth adjustments and repeatable batch assembly.
• Drop-in Die Upgrade: Converts standard rifle seating dies with 1/2"-20 threads into micrometer-adjustable dies without altering the original die body.
• Calibre Interchangeability: Directly replaces standard #19 seating plugs across compatible dies, including .300 Winchester Magnum, .303 British, .300 Savage, .308 Norma Magnum, and .300-221 Remington.
• Standard Bullet Profile: Designed to seat conventional standard ogive projectile shapes securely without tip damage.

Specifications

• Manufacturer Part Number: 09079
• Thread Compatibility: 1/2"-20
• Seating Plug Number: #19 (replaces plug 01079)
• Adjustment Graduations: 0.001 inch (0.001")
• Calibre Compatibility: .300 Win Mag, .303 British, .300 Savage, .308 Norma Mag, .300-221 Rem
• Bullet Profile: Standard (STD) ogive
• Operation: Mechanical handloading tool (no power required)

Who is the Redding #19 Bullet Seating Micrometer - 300wm, 303 for?

• Precision handloaders loading .300 Win Mag for long-range hunting — requires precise seating depth adjustments indexed in 0.001-inch increments using 1/2"-20 threads to establish consistent cartridge overall length and bullet jump on standard ogive projectiles.
• Handloaders assembling target and sporting ammunition for .303 British — relies on a drop-in reloading bullet seating micrometer with 1/2"-20 threads that directly replaces the factory #19 plug to permit fine adjustments in 0.001-inch steps.

Less suitable for: Handloaders using dedicated Redding Competition Seating Dies, large-body dies requiring 5/8"-18 threads, or sharp secant-ogive Very Low Drag projectiles; these setups require dedicated VLD seating micrometers with specialized internal cavity depths or dedicated large-thread micrometer assemblies to prevent projectile tip bottoming.