Mark 7 Reloading Optical Decapsense Sensor For 650

The Mark 7 Reloading Optical Decapsense Sensor for 650 is a precision automation upgrade designed for shooters and small-scale reloaders running a Mark 7 650 Autodrive press. This optical sensor monitors the decapping station to confirm that spent primers are actually leaving the machine—catching the failures that can silently wreck your press and ruin batches of brass.

Decapping sounds simple until it isn't. A broken decapping pin or a stubborn primer that won't fully eject can jam the next stage, driving a spent primer back into fresh brass or worse. The Decapsense sensor uses optical recognition to verify that each primer is removed before the press advances. If a primer remains, the machine stops automatically on that stroke, letting you clear the jam without destroying your case or damaging downstream equipment. For reloaders processing new or once-fired brass, the sensor is easily disabled via the Mark 7 tablet interface—no physical removal required.

Beyond decapping oversight, this sensor also functions as a brass-presence detector. When enabled, it stops the press if no case is sitting in the decapping station, adding a safeguard against running empty cycles and keeping your workflow tight. The package includes the sensor, mounting bracket, clear tubing, and a software update file to integrate the new hardware with your 650's control system. If you're adding it to an existing press, installation uses your machine's existing hardware and mounting holes; simply remove the spent primer cup that shipped with the machine.

This is a genuine reliability multiplier for high-volume reloaders: fewer broken pins, fewer scrap batches, less downtime, and the peace of mind that comes from knowing your most critical station is actually doing its job.

Key Features

• Optical sensor confirms spent primers are fully ejected before press advances
• Stops the press automatically if a primer remains, preventing downstream damage
• Dual-function: also detects brass presence in the decapping station
• Easy enable/disable from Mark 7 tablet interface—no physical removal needed
• Designed exclusively for Mark 7 650 Autodrive presses
• Includes mounting bracket, clear tubing, and software update file
• Eliminates the need for a spent primer cup

Specifications

Frequently Asked Questions

Will this sensor work on other Mark 7 presses or reload machines?

No. The Decapsense sensor is designed exclusively for the Mark 7 650 Autodrive and will not fit other press models.

Do I have to use the sensor every time I reload?

No. You can enable or disable the sensor at any time using the Mark 7 tablet interface. If you're processing new brass and don't need primer verification, simply disable it without removing any hardware.

What comes in the box, and do I need special tools to install it?

The package includes the optical sensor, mounting bracket, clear tubing, and an email file containing the software update for your 650. Installation uses your machine's existing hardware and mounting holes—no special tools required. If you purchase it with a new 650 Autodrive, it will be pre-installed and tested.

How does this sensor prevent press damage?

The sensor optically verifies that each spent primer has been removed before the stroke completes. If a primer fails to eject or a decapping pin breaks, the sensor detects this and stops the press immediately, preventing that primer from being driven back into fresh brass or causing damage at downstream stations.