Description
If you've been trimming brass by hand or juggling a pile of shell holders, the Platinum Case Prep & Trim System is the kind of upgrade that changes how you feel about reloading night. This is a powered bench-top station that brings trimming, chamfering, deburring, and primer pocket cleaning into one spot, so you can take a piece of brass through the whole prep process without hopping between tools.
The heart of it is the case holder with an adjustable collet and bushing setup. Instead of referencing off the case head, it indexes on the shoulder, which is where you want your measurement coming from for consistent trim length. You drop brass in, the collet squares it up against the high-speed cutter, and it trims until the shoulder stops against an internal bushing. Dial it in once and every case comes out the same. The adjustable collet system covers all shouldered cases from .17 Remington to .460 Weatherby, so one machine spans just about every bottleneck rifle cartridge you're likely to load. Keep in mind it works off the shoulder, so straight-wall pistol brass isn't part of the equation.
What Sets the Platinum Case Prep System Apart
Three output shafts run tools at the same time, and they accept any case prep accessory with standard 8-32 threads, so you're not locked into one brand's tooling. The cutters and chamfer tools are hardened high-speed steel built to stay sharp through thousands of rounds, and the heavy-duty motor and drivetrain are tuned to keep working trip after trip. Aluminum and steel construction means this thing earns a permanent place on the bench rather than getting shoved in a drawer.
Staying Organized With the Platinum Trim System
A built-in storage box keeps your spare collets, bushings, and tools together so nothing wanders off between sessions. The included adjustable stand with non-skid feet lets you set it up at a working angle that fits your bench and your back. For anyone running volume or chasing consistency across a lot of brass, this one does the heavy lifting and does it cleanly.
Key Specifications
- Manufacturer: Frankford Arsenal
- Model: Platinum Series Case Trim and Prep System
- Manufacturer Part Number: 903156
- UPC: 661120031567
- Product Type: Case Prep Center
- Caliber Compatibility: Shouldered cases, .17 Remington to .460 Weatherby
- Power: 110V
- Output Shafts: 3 shafts, 8-32 thread
- Cutter Material: Hardened high-speed steel (HSS)
- Body Construction: Aluminum and steel
- Collets Included: 3
- Bushings Included: 5
- Length: 11.2 in
- Shipping Weight: 9.18 lbs
What’s Included
- Platinum Series Case Prep & Trim Center unit
- Case holder with adjustable collet and bushing system
- 3 collets
- 5 bushings
- VLD inside chamfering tool
- Outside chamfer tool
- Large primer pocket cleaning tool
- Small primer pocket cleaning tool
- Adjustable stand with non-skid feet
- Built-in storage box
Frequently Asked Questions
Does the Platinum Case Prep System work with straight-wall cases?
No. The system indexes off the case shoulder to set trim length, so it only works with shouldered brass. The adjustable collet covers anything from .17 Remington to .460 Weatherby, but straight-wall pistol and rifle cartridges don't have a shoulder for the machine to reference.
Do I still need shell holders with this trimmer?
Nope, that's one of the main perks. The adjustable collet and bushing system takes the place of traditional shell holders by gripping the case and indexing on the shoulder. You adjust it once for a given cartridge and every case trims to the same length.
Can I run more than one prep tool at a time?
Yes. The Platinum Case Prep & Trim System has three output shafts in addition to the cutter, so you can mount chamfer tools and primer pocket cleaners and keep them turning simultaneously. That lets you move a piece of brass through trimming and prep in one pass.
Will aftermarket case prep tools fit the output shafts?
They should. The three output shafts use the standard 8-32 thread that most case trimming and prep accessories are built around. That means you're not stuck with only Frankford Arsenal tooling and can add whatever brushes, cutters, or scrapers suit your workflow.





Reviews
There are no reviews yet.