Frankford Arsenal Case Dryer Tray Capacity Explained
By Amis Thains Published 5 min read
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You just cleaned a bulk of brass and need to know if it will fit in your dryer before you start the cycle. This page gives you the exact tray capacity limits and how to load them so your brass comes out dry, not wet.
In short: The Frankford Arsenal Platinum Series Brass Dryer typically uses trays with a specific case count capacity depending on the caliber. For common rifle calibers like .223 or 9mm, a single tray holds roughly 100 to 200 cases, though exact counts vary by case length and stack height. Always leave a gap between cases to ensure the forced air convection works properly.
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The 500-watt unit and vented trays dry brass in under an hour without clogging.
What the tray capacity actually is
Frankford Arsenal does not usually publish a single fixed number of cases for every caliber because capacity depends on the length of the brass. A shorter .223 case allows more rows in the tray slots than a longer .308 Win. case. There is more on best case tumbler for reloading in a separate guide.
For most hand-loaders, a standard Platinum Series tray holds between 100 and 150 cases of common rifle calibers. Pistol brass, being shorter, can often fit 200 or more cases per tray.
If you are processing a large batch, calculate your total cases and divide by the estimated capacity to determine how many cycles you need to run.
This variance matters when planning your workflow. If you clean 500 cases of .300 Blackout, which is slightly longer than .223, you will lose one row of space compared to a shorter cartridge. That single row can be the difference between needing one or two extra loading passes.
Pro tip: Do not stack cases on top of each other. The tray slots are sized to hold cases upright with space between them for air movement.
The vented trays are designed to maximize airflow for these specific capacity levels.
- Vented trays provide the best airflow and the heavy-duty 500-watt heating unit can dry
- The forced air convection ensures that the brass gets the maximum amount of airflow
How the drying system affects loading
The dryer uses forced-air convection. This means hot air is pushed across the brass to evaporate moisture. If you pack the trays too tightly, the air cannot circulate around the bottom of the cases.
This creates wet spots, particularly at the base. To get a consistent dry, leave at least a small gap between cases. The inner lip on the trays helps keep brass in the channels but does not prevent overcrowding. We go through whether a home press can stretch magnum cases step by step in its own article.
Running the dryer at full power for a shorter cycle is better than overloading and extending the time, as stagnant air reduces efficiency.
When cases are too close, the heat builds up unevenly. You might find the top of the case dry while the primer pocket remains damp. This uneven drying can lead to moisture corrosion later, so err on the side of fewer cases per tray.
When capacity matters for your workflow
If you reload on weekends, you likely process one or two trays at a time. Capacity is rarely a bottleneck.
For match shooters or those who load in bulk after large-scale cleanings, capacity determines your total time. If you have 500 cases of .300 Blackout, and a tray holds 120, you will need five separate loading passes.
Consider the total cycle time. A dryer that holds fewer cases but runs faster can be more efficient than a larger tray that requires a longer dry time due to poor airflow.
Tracking this helps you plan your reloading sessions. If you know your tray holds 100 cases, you can set a goal to clean 300 cases per session. This keeps your inventory moving without waiting for long, ineffective dry cycles. We go through lyman frankford case dryers step by step in its own article.
Pro tip: Label your trays by caliber and count. This prevents mixing wet and dry brass during high-volume sessions.
Common myths about tray limits
Myth: You can fill the tray to the brim if the cases fit physically.
Fact: The vented design requires air to move between the brass. Packing to the brim creates a blockage. The heat is wasted, and the bottom of the cases remains damp.
Myth: All trays hold the same number of cases.
Fact: Capacity is inversely related to case length. Shorter cases allow for more rows. Always check the physical fit before assuming capacity.
Myth: Drying faster requires more heat, not better airflow.
Fact: The convection system relies on moving air to carry moisture away. Excess heat without movement can warp brass. The balance is key.
Choosing the right dryer for your volume
The Platinum Series 5 Tray Brass Dryer is the standard for most hand-loaders. It offers a balance of speed and capacity.
If you find yourself constantly overloading trays to save time, you might need a larger capacity unit or a different drying method. A vibrating tumbler or a dedicated large-capacity dryer can handle bulk loads more effectively. There is more on frankford arsenal station in a separate guide.
Check the maker’s current spec sheet for the exact dimensions of the tray you own. This helps you plan your batch sizes accurately.
If you are looking at alternatives, consider tools that integrate drying with cleaning. A vibratory tumbler can clean and dry in one step, though it takes much longer than a dedicated dryer. For speed, the dedicated convection dryer remains the superior choice for final prep.
The bottom line
For most shooters, the Frankford Arsenal Platinum Series dryer with its 5-tray configuration handles bulk loads well if you respect the airflow gaps. Calculate your batch size based on a conservative case count per tray to ensure dry results. If you process thousands of cases regularly, look at high-capacity tumblers instead.
- Vented trays provide the best airflow and the heavy-duty 500-watt heating unit can dry
- The forced air convection ensures that the brass gets the maximum amount of airflow
Frequently asked questions
How many 9mm cases fit in one Frankford Arsenal tray?
Because 9mm cases are short, you can typically fit more rows than rifle brass. Expect roughly 150 to 200 cases per tray, provided they stand upright in the slots without leaning. Always leave space for air circulation.
Can I mix different calibers in the same tray?
It is not recommended. Different case lengths can cause uneven stacking, which blocks airflow. Keep trays dedicated to a single caliber to ensure consistent drying and prevent cross-contamination of lubricants or dirt.
What if my brass is still wet after a full cycle?
You likely overpacked the tray. The convection system needs open space to move hot air around the base of each case. Try splitting the load into two smaller batches to increase airflow and reduce total cycle time.
Is the Platinum dryer better than a Lyman Cyclone?
Both use convection drying. The Frankford Platinum often features a robust heating element and heavier trays. The Lyman Cyclone is a solid alternative, but the specific tray capacity and airflow patterns differ slightly. Choose based on which tray system fits your workspace better.