The Model 307 MZY is Weatherby‘s first purpose-built muzzleloader, built around the modular Model 307 platform for centerfire-style handling and precision. Its Arrowhead Gen2 Ignition System uses precision-fit primer modules with large rifle primers, addressing common reliability issues found in other ignition designs. This .45 caliber version (Weatherby part no. 3MZY01N45R8BBP) ships with a 26-inch barrel, a basic peep sight, and a muzzle brake. Browse more muzzleloaders in Black Powder Rifles & Muzzleloader Rifles.

Key Specifications

• Caliber: .45 Caliber
• Barrel Length: 26″
• Sights: Basic Peep
• Muzzle Device: Brake
• Ignition: Arrowhead Gen2, Large Rifle Primer

Frequently Asked Questions

What is the Arrowhead Gen2 Ignition System?

A sealed rifle-primer ignition design, typically found only in custom rifles, using precision-fit primer modules with large rifle primers.

What sight does this version use?

A basic peep sight.

Does this rifle include a muzzle brake?

Yes, it ships with a muzzle brake installed.

Buy the Weatherby Model 307 MZY

Ready to add the Weatherby Model 307 MZY to your gear? Order today from Schaefer Defense.