Mark 7 650/750 Bullet Sense Detection Sensor Red

The Mark 7 650/750 Bullet Sense Detection Sensor Red is an electronic safeguard built for precision reloaders who run progressive presses and can't afford a ruined batch. This laser-based detection system watches your Mark 7 650 or 750 press during each stroke and stops the machine the instant it detects a missing, upside-down, or sideways bullet—or alerts you if brass runs out. It's the difference between a smooth reloading session and discovering halfway through that you've loaded rounds with no projectiles or spilled powder everywhere.

The Bullet Sense uses an adjustable laser mounted on a swing-out bracket to monitor the exact point where you want it: the tip of the incoming bullet or directly on the brass. The laser beam interruption tells the system whether a round is present and correctly oriented. If the beam bounces back uninterrupted to the sensor's mirror, the machine stops at the top of the stroke. You control the laser height with a simple thumb screw, giving you precise authority over what the system catches. Because this is a laser-based approach, it can distinguish between orientation and shape—even detecting the difference between an upside-down bullet and a hollow point—far more reliably than mechanical feeders alone.

Built from anodized aluminum, the sensor supports 9mm through .308 calibers and mounts in moments using included hardware with zero modifications to your Dillon press. It communicates with your Mark 7 tablet for on-the-fly enable/disable and error alerts. The swing-out design keeps it clear of your shell plate when you need access. Bullet Sense plays well with existing Mark 7 components like PowderSense and the Dillon Low Powder Check, so you can layer multiple safeguards if your workflow demands it.

This is a must-have upgrade if you're serious about eliminating the operator error that turns a productive reloading afternoon into scrap and frustration.

Key Features

• Laser-based detection stops press if bullet is missing, sideways, or upside-down
• Can also monitor brass supply to prevent running out mid-session
• User-adjustable laser height via thumb screw for different bullets and calibers
• Anodized aluminum construction with precision optics
• Swing-out bracket design for quick access to shell plate
• Tablet-based alerts and on-the-fly enable/disable through Mark 7 console
• Works with 9mm through .308 calibers
• No modifications to your press required; installs with included hardware
• Compatible with PowderSense and Dillon Low Powder Check

Specifications

Frequently Asked Questions

Will the Bullet Sense work with my Mark 7 650 or 750?

Yes, this sensor is compatible with both Mark 7 650 and 750 models, provided your press is equipped with Mark 7 Autodrive. It will not function on standard Dillon presses without the Autodrive system, and is not currently compatible with GSI bulletfeeders.

Can this sensor detect different types of bullet problems?

Absolutely. The laser system can detect a missing bullet, a sideways bullet, an upside-down bullet, and even distinguish between an upside-down bullet and a hollow point. It can also monitor brass supply to stop the press if you run out. Each detection triggers a machine stop and a tablet alert.

Do I need to modify my press to install the Bullet Sense?

No. The sensor installs in moments using the included hardware with zero modifications to your Mark 7 press. The swing-out bracket design also keeps it out of the way when you need to access your shell plate.

How do I adjust the laser for different bullets and calibers?

The laser is mounted on a user-adjustable slider controlled by a traditional thumb screw. You can point the laser directly at the bullet tip or brass, and adjust the height to match your specific caliber and bullet profile.