Weatherby Model 307 Builders Action Long Magnum | Graphite Black

The Weatherby Model 307 Builders Action is a modern long-magnum platform intended for custom bolt-action rifle builds. It features a 2-lug, spiral-fluted cylindrical bolt with an M16 extractor and a tool-less takedown system for simplified maintenance. The action is finished in Graphite Black Cerakote and is designed to accept many Remington 700–pattern aftermarket stocks, triggers, rails and bottom metals.

Recommended optic: Leupold VX-Freedom 3-9×40, a versatile scope priced under $1000 that pairs well with long-action bolt rifles for general hunting and accuracy work.

Product Specifications

• The finish on the bolt and bolt knob is Graphite Black Cerakote.
• The action provides a 2-lug bolt design with spiral fluting.
• The bolt uses an M16 extractor for reliable extraction.
• The bolt features a tool-less takedown for easy disassembly and maintenance.
• The overall length for the long action is 8.7.
• The weight for the long action is 1.78 lbs.
• The bolt face diameter for the long action (magnum) is .540.
• The bolt throw is a 90 degree throw.
• The bolt knob threads are 5/16-24.
• The tenon threads are 1-1/16-16 with an engagement length of .880.
• The magazine box length for the long action measures 3.95.
• The product is tapped for scope mounts or a Picatinny rail.
• The action is compatible with most aftermarket Remington 700 accessories including stocks, triggers and bottom metals.
• The product UPC is 747115453146.

This builders action offers a straightforward foundation for a custom long-magnum rifle. Its Remington 700–compatible footprint and tool-less maintenance features simplify installation and upkeep, while the spiral-fluted 2-lug bolt and robust extractor support consistent function. Use this action as the core of a long-range hunting or precision-oriented build where a magnum-length action and wide aftermarket support are priorities.