Universal Reloading Tray | .38 Spl, .357 Mag & 9mm Luger

Overview

A stable and organized workspace is the foundation of safe and efficient reloading. This 3D-printable reloading tray is a versatile, high-capacity solution designed to accommodate the most popular handgun calibers: 9mm Luger, .38 Special, and .357 Magnum. Whether you are charging cases with powder or performing a final inspection, this tray keeps your brass upright, secure, and perfectly aligned for a streamlined workflow.

Why use this?

• Triple-Caliber Compatibility: The stepped or optimized hole geometry securely holds the rimmed .38/.357 cases as well as the rimless 9mm cases without excessive wobble.

• High-Volume Efficiency: Features a generous grid layout (typically 50 rounds) that matches standard ammunition box counts and competitive shooting stages.

• Safety First: Provides a clear visual overview of your powder levels across the entire batch, helping to prevent double charges or squib loads.

• Bench Stability: Designed with a low center of gravity and a wide base to prevent accidental tipping during the reloading process.

Technical Specifications & Printing

• Material: PLA, PETG, or ABS. PLA is excellent for its rigidity and lack of warping on larger flat surfaces.

• Layer Height: 0.2mm to 0.25mm. Since this is a functional bench tool, speed can be prioritized over ultra-fine detail.

• Walls/Perimeters: 3 wall loops to ensure the internal dividers are sturdy.

• Infill: 15% to 20% (Grid or Gyroid).

• Anti-Static Tip: Using an anti-static filament or wiping the finished tray with a dryer sheet can prevent stray powder flakes from clinging to the plastic.

Designer’s tip :

For this type of tray, I recommend adding a small chamfer (a bevel) to the edge of each hole in your 3D model. This makes it much easier to quickly insert the sleeves without having to aim precisely. If you want an ‘industrial’ look, printing in metallic grey or bright orange (for safety) looks great in the videos on your channel.

How to Use

1. Place the tray on a level surface on your reloading bench.

2. Insert your cleaned and sized brass into the slots.

3. Use the tray to move your batch between stations (priming, charging, and bullet seating).

4. The open design allows for easy cleaning; simply blow out any dust or debris with compressed air.

About the Project

Part of the Taka Tech Lab series—bridging the gap between DIY maker culture and professional sports shooting equipment.