This design allows you to hold 50 rounds of .45 Colt .45 Long Colt with the bullet facing down.  Check out my other ones if you are looking for something similar. (See below). 

Other Boxes

Check out my other ammo boxes for similar designs. If you are looking for another caliber, just let me know via a DM.  I am in the process of updating all the designs to the Gen 3 style, so it might take me a bit to get to a custom odd caliber. I go in order of most popular first. 

Collection of my other ammo boxes - https://makerworld.com/en/collections/1273196

Updated Design! - Gen 3

• Snap in Side Labels that are customizable - The text, color, and frame color can all be customized by the user. 
• Stackable - Chamfer on bottom and mating feature on cover.
• Customizable Text on Lid
• Improved Robustness - Wall thickness increased
• Moved snap lock feature from start to end of the cover groove. This will improve the issue a few folks had with the the seam delaminating between layers. 
• Simplified Geometry

Assembly

1. Snap in side labels - Hook one of snap features of the label and slide your finger across to engage the other snap feature. 
2. Snap in Round divider Tray  - It you need to remove this just use a pencil and gently pry it to disengage the snap feature.
3. Slide Cover on - The first few snaps will be a little firm, but it will loosen after a few and it sits for couple days.