Area 419 ZERO M-Series 300 Win Mag Sizing Die w/ Zero Shell Holder

Description

The Area 419 ZERO M-Series Sizing Die in 300 Win Mag is the kind of tool that takes the guesswork out of prepping brass. Instead of shimming shell holders or floating a die in space to chase the right shoulder bump, you get a micrometer up top that lets you set your headspace and repeat it every single time. It's a full-length die that sizes the body of the case down to true spec, so you won't be fighting a sticky bolt after a couple of firings. For a hard-kicking magnum like the 300 Win Mag that works brass pretty hard, that consistent, repeatable sizing makes a real difference on the bench and in the field.

What Sets the ZERO M-Series 300 Win Mag Die Apart

This die pulls several steps that are usually spread across different tools into one coordinated system. It handles shoulder bump, full-length body sizing, decapping, and neck tension all in one stroke of the ram. The micrometer-adjustable headspace works much like the top of a quality seating die, letting you move the shoulder against a fixed point for tight, consistent results. There's also a hydraulic shoulder pressure relief feature and spring ejection for spent primers, which keeps things running clean and smooth.

Neck Tension and Shell Holder Setup on the 300 WM Die

Neck sizing is handled from the inside with a precision-ground expander mandrel that has a long bearing surface, so the whole neck gets squared up as it pulls through. The die ships with a .002 neck tension mandrel, and Area 419 offers additional mandrel increments through their mandrel kit if you want to fine-tune your setup. This is a 1-1/4 inch die, so it needs a Hybrid or 1-1/4 inch turret, whether you're running it on the ZERO press or another compatible press. It is not compatible with 7/8 inch turrets or standard shell holders, which is why Area 419 includes the ZERO M-Series shell holder with its larger rim right in the box.

Everything is machined and built right here in the USA, and the die arrives with a ZERO die ring, a spare decapping pin, and the install and removal tools you'll need to get it set up.