Weatherby 307 Builders Action Short Magnum Blk

The Weatherby 307 Builders Action Short Magnum represents a significant milestone for the venerable American gunmaker—the first entirely new action design in over fifty years. Built from the ground up as a modular platform, the 307 short action is engineered to work seamlessly with the broader aftermarket ecosystem of stocks, triggers, rails, mounts, and bottom metals that modern precision shooters rely on. This is a builder's action in the truest sense: a precision foundation that lets you assemble a rifle exactly as you envision it.

The 307 short action features a clean, efficient 2-lug bolt with a 90-degree throw and tool-less takedown—no screwdrivers or armorers' wrenches required for field stripping and maintenance. The bolt knob accepts standard 5/16-24 threaded aftermarket knobs, so you can customize ergonomics to your preference. Finished in durable graphite black Cerakote, the action is built to handle serious use in the field or at the bench. Like every Weatherby product since 1945, the 307 carries the brand's commitment to precision manufacturing and reliability.

Whether you're a long-range competition shooter, a dedicated hunter building a custom rig, or a gunsmith looking for a modern, versatile platform, the Weatherby 307 short action removes the guesswork from the foundation of your build. Its compatibility with standard 700-style rails and mounting patterns, combined with Weatherby's quality control, makes it a genuine alternative to legacy actions—one that doesn't require you to compromise on modern features or design flexibility.

Key Features

• First new Weatherby action in over 50 years—purpose-built for modern gunbuilding
• 2-lug bolt with 90-degree throw for smooth, reliable cycling
• Tool-less bolt takedown for fast field cleaning and maintenance
• Accepts standard 5/16-24 threaded bolt knobs for ergonomic customization
• Compatible with standard aftermarket stocks, triggers, rails, mounts, and bottom metals
• Graphite black Cerakote finish resists corrosion and looks professional
• Short action dimensions for handling and quick target transitions

Specifications

Frequently Asked Questions

Will the Weatherby 307 short action work with aftermarket stocks and triggers I already own?

Yes. The 307 is designed from the start to accommodate the broad range of aftermarket stocks, triggers, rail systems, and bottom metals currently on the market. Its standard 700-style tenon thread pattern and action screw dimensions ensure compatibility with established gunbuilding components.

Can I swap bolt knobs on this action?

Absolutely. The bolt knob uses a standard 5/16-24 thread, so you can install any aftermarket bolt knob that matches that size. This lets you dial in the ergonomics and aesthetics you prefer.

How does tool-less takedown work?

The 2-lug bolt design incorporates a convenient tool-less takedown system that allows you to disassemble and maintain the bolt without requiring screwdrivers or specialized tools—making field cleaning and inspection much faster and simpler.

What's the headspace on this action?

The Weatherby 307 short action headspace is set at .899" ± .000, measured from the bolt face to the recoil lug. This specification is critical for barrel fitting and ensures consistency across builds.