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The Lee Pro Auto-Disk Powder Measure (model 90429) is built for reloaders who want consistent powder charges without slowing down the loading rhythm. It uses a case-activated design, meaning powder only drops when a case is present at the die, which cuts down on spilled charges and the kind of operator errors that can ruin a day at the bench. The Teflon-coated metal casting paired with an elastomer wiper gives it a smooth stroke and keeps it from shaving or cutting powder, so your charges stay uniform load after load.
This is the upgraded version of Lee's standard Auto-Disk, and the differences show up where it counts. The large hopper holds a half pound of powder and attaches with brass thumb nuts, so swapping disks or changing powder takes seconds instead of a wrench. A shut-off valve on the hopper lets you close it off before draining, and the positive pull-back lever adds a layer of safety by giving you a deliberate return stroke. These touches are why it tends to be the go-to for people running volume.
The measure comes with four interchangeable disks, each with six preset cavities, giving you 24 preset volume charges to work from. Keep in mind this is a volume-based system, so weigh your charges on a scale to confirm what a given cavity throws with your specific powder. It shines on straight-wall handgun rounds like 9mm, 40 S&W, and 45 ACP. If you want to stretch its range, Lee's Double Disk Kit lets you stack two disks for larger or finer charges and opens the door to small rifle cases, and the Adjustable Charge Bar swaps in for infinitely variable settings between .28 and 1.6 cc.
The Pro Auto-Disk mounts on a wide range of Lee presses including the Breech Lock Challenger, Classic Cast, Turret, Pro 1000, Auto Breech Lock Pro, Ultimate Turret, and Loadmaster. It works through the Powder Through Expanding Die that comes with Lee pistol die sets, or the Rifle Charging Die for bottleneck cases. If you reload on a Lee setup, this is one of the easiest ways to automate your powder step.
It's designed to mount on Lee presses including the Breech Lock Challenger, Classic Cast, Turret, Pro 1000, Auto Breech Lock Pro, Ultimate Turret, and Loadmaster. The measure attaches through the Powder Through Expanding Die that comes with Lee pistol die sets, or a Rifle Charging Die for bottleneck cases. If you're running a Lee press, it drops right into the workflow.
Yes. The disks meter by volume, not weight, so the same cavity throws a slightly different grain weight depending on which powder you use. Always weigh a few charges on a scale to confirm your actual load before running a batch.
It's best suited for straight-wall handgun cases, but it can charge small rifle cases with Lee's Double Disk Kit, which raises the hopper so you can stack two disks. For bottleneck rifle brass you'll want to pair it with the Rifle Charging Die. For fine-tuning between the preset cavities, the Adjustable Charge Bar swaps in and adjusts from .28 to 1.6 cc.
That's the case-activated design working as intended. The measure only throws a charge when a case is present at the die and flares the case mouth, which helps prevent double charges and missed charges. It's one of the features that makes it reliable for high-volume loading.
| UPC | 734307904296 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 90429 |
| Caliber/Gauge | All |
| Capacity | .50 lbs |
| Color | 1 |
| Length | 12.2000 |
| Model | |
| Product Type | Pro Auto-Disk Powder Measure |
| Quantity | 1 |
| Shipping Weight | 1.4 |
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