The Redding #6 Bullet Seating Micrometer (MPN 09066) is a drop-in replacement upgrade for standard non-graduated seating plugs in standard Redding bottleneck seating dies. Constructed from machined, heat-treated alloy steel, it threads directly into compatible dies via a 1/2"-20 TPI stem thread, eliminating the need to purchase an entirely new die set. The unit features a clearly engraved, knurled micrometer barrel calibrated to 0.001-inch (0.0254 mm) direct-reading graduations, allowing Australian handloaders to precisely measure, adjust, and record cartridge overall length (COAL) during load development. It is an unpowered, mechanical reloading tool engineered for use with standard tangent ogive, spitzer, round-nose, and polymer-tipped hunting projectiles.

Key Features

• 0.001-Inch Direct Adjustment: Laser-engraved, direct-reading micrometer barrel allows precise changes to bullet seating depth in exact 0.001-inch increments.
• Direct Drop-In Fit: Directly replaces original Redding #6 seating plugs (part #01066) using the standard 1/2"-20 TPI interface.
• Standard Bullet Profile Seating Cup: Engineered to seat standard tangent ogive, spitzer, and polymer-tipped hunting bullets without marring bullet jackets.
• Durable All-Steel Build: Precision-machined, heat-treated alloy steel construction ensures repeatable seating depth over extended bench reloading sessions.

Product Specifications

• Manufacturer Part Number: 09066
• Stem Thread Interface: 1/2"-20 TPI
• Adjustment Graduations: 0.001 inch (0.0254 mm)
• Calibre Profile Compatibility: Redding #6 profile dies (6.5x55mm Swedish Mauser, .270 Winchester, .280 Remington, .280 Ackley Improved)
• Construction: Heat-treated alloy steel with knurled adjustment head
• Exterior Length: Approximately 65–75 mm
• Weight: 80–115 g (0.18–0.25 lb)
• Power Requirements: None (manual mechanical operation)

Who is the Redding #6 Bullet Seating Micrometer - 6.5x55, 270 for?

• Handloaders reloading 6.5x55mm Swedish Mauser and .270 Winchester cartridges — interfaces directly with standard dies via a 1/2"-20 TPI top stem thread to upgrade existing setups without replacing the complete die body.
• Handloaders developing precise rifle ammunition using standard bullet profiles — utilizes 0.001-inch direct-reading graduations on the seating micrometer to dial and record precise cartridge overall lengths across different bullet batches.

Less suitable for: Handloaders loading steep secant-ogive projectiles or using dies with non-1/2"-20 threads; steep match projectiles require a dedicated VLD profile seating micrometer (such as part #09166) to avoid bullet nose deformation, while competition dies require factory integrated micrometer sleeve mechanisms.