Forster Products Inc 011521 Co-Ax Primer Seater

The Forster Products Co-Ax Primer Seater is a bench-mounted priming tool built for reloaders who want consistency and speed in their handloading workflow. If you've relied on press-mounted primer seaters and felt limited by their precision or pace, a dedicated bench tool changes the game—and this one's engineered to do the heavy lifting. The Co-Ax design uses automatic shellholder jaws that grip most modern rifle and pistol cases securely, eliminating the need to buy and swap individual shellholders for different cartridges.

Reloading ammunition demands repeatability, and the Co-Ax delivers it through thoughtful engineering. Primers feed sideways through transparent tubes—a design choice that matters for safety and practicality. You can see at a glance how many primers remain in each tube, and the sideways stacking keeps loose primers contained and manageable. The tool sits on a quality machined-casting base that feels solid on the bench, and a built-in primer flip tray keeps your workspace organized and efficient.

You get four primer tubes right out of the box: large rifle, small rifle, large pistol, and small pistol. That covers the vast majority of centerfire handloads without forcing you to source extras. Whether you're prepping match ammunition, hunting loads, or running high-volume pistol reloads, this is the kind of tool that pays for itself in time saved and consistency gained.

Key Features

• Automatic shellholder jaws accommodate most modern rifle and pistol cases—no additional shellholders required
• Bench-mounted design offers faster, more consistent primer seating than press-mounted alternatives
• Primers stack sideways in feed tubes for added safety and easy visual primer-level monitoring
• Machined-casting base provides stable, durable platform for dedicated reloading bench
• Four primer tubes included: large rifle, small rifle, large pistol, small pistol
• Built-in primer flip tray keeps workspace organized

Specifications

Frequently Asked Questions

Will the Co-Ax work with my rifle and pistol cartridges?

The automatic shellholder jaws close securely on most modern rifle and pistol cases. You won't need separate shellholders for different cartridges—the jaws adapt to fit. If you reload less common or unusual cases, confirm compatibility before ordering.

What primer sizes does it handle?

The tool comes with four primer tubes covering the most common reloading applications: large rifle, small rifle, large pistol, and small pistol primers.

Is this faster than a press-mounted primer seater?

Bench-mounted priming tools have long been favored by reloaders specifically because they work faster and achieve better primer seating consistency than many press-mounted alternatives. This is a dedicated tool designed for that purpose.

What's included in the box?

You receive the Co-Ax Primer Seater base unit, four primer feed tubes (large rifle, small rifle, large pistol, small pistol), and a built-in primer flip tray. No additional shellholders are needed.