RCBS Lockout Die Spring-Loaded Plunger for Reloading Precision

The RCBS Lockout Die is a spring-loaded plunger safety mechanism designed to catch operator errors before they become problem rounds. Built for progressive reloading presses, this die detects two of the most common and dangerous reloading mistakes: a powder charge that failed to drop into the case, or a double charge that somehow made it past your inspection. When either condition is detected, the lockout die halts the press's ram travel mid-cycle and forces you to stop and address the issue—you can't just keep cranking and hope for the best.

If you're running a progressive press with straight-wall pistol calibers 9mm and larger, adding a lockout die to your die setup is straightforward insurance against the kinds of mistakes that happen when you're in the rhythm of reloading. It won't let you develop bad habits or push through when something's off. The spring-loaded plunger design is simple and reliable—no electronics, no complexity, just a mechanical safety that works every time.

Reloading requires focus and discipline, and part of that discipline is using the right tools to catch your own mistakes. The RCBS Lockout Die fits into your progressive press workflow and becomes an automatic checkpoint that keeps your ammo safe and your process honest.

Key Features

• Detects no-powder and double-charge conditions in progressive pressing
• Locks the ram to stop production until the problem is corrected
• Spring-loaded plunger mechanism for reliable, repeatable operation
• Compatible with straight-wall pistol calibers 9mm and larger
• Designed specifically for progressive reloading presses

Specifications

Frequently Asked Questions

What calibers is the RCBS Lockout Die designed for?

The Lockout Die works with straight-wall pistol calibers 9mm and larger. It's not suitable for rifle calibers or smaller pistol rounds like .380 ACP.

Can I use this die on a single-stage or turret press?

No. The RCBS Lockout Die is engineered specifically for progressive reloading presses, where it integrates into the press's sequential motion to detect charging errors.

How does the Lockout Die actually stop the press?

The spring-loaded plunger detects when a case lacks powder or contains an over-charged powder column. When either condition is sensed, the plunger mechanism locks the ram's travel, preventing the press from continuing to the next station until you stop, remove the problem round, and resolve the issue.

Will the Lockout Die catch every possible reloading error?

The Lockout Die is designed to catch no-powder and double-charge conditions—two of the most dangerous and common mistakes in progressive reloading. It's a critical safety tool, but reloading safety always relies on your attention and technique as well.