I, like several others, faced issues with the "300!" achievement. To resolve the bug, I debugged using Edith and discovered that when ammo crafting led to the elimination of one of the components (red, yellow, or blue), the crafted amount was not considered for the achievement.

Fix tested for version 1.0.18.1101 (version of file SteamGame.exe).
After the developers fix the bug I will delete this guide.

To fix the bug, you need to correct the script for Component in Edith.

• Launch Edith, select Tool > Graphite, in the Graphite window select Graph > Open and specify the file Items\Component\Component.dir.
  
• Find the orange block with the title On300Craft (there are two of them, both must be fixed) and select it with the left button - the block parameters will appear on the right panel of the window.
  
• Then there are two options, you need to choose one:
  
  1. In the block parameters, check the Sync field. It should look something like this:
     
  2. Below the On300Craft block there is a mConsume block. The connection from its Input node goes to the Success node of the mGive block:
     This connection needs to be deleted: hold down the gray circle of the Input node with the left button, move mouse to the right, beyond the border of the node, and release the left button. Now you need to connect the Input node of the mConsume block and the Output node of the On300Craft block: hold the mouse on the Input node and drag it to the Output node, release:
     
• Repeat for the second block.
  
• Save changes (Graph > Save), close Edith and run the game. Now you can craft ammo for achievement.

I have uploaded the second option to my Google Drive. You can download it from the link[drive.google.com] provided.
After downloading, the archive must be unpacked into the game folder. The result should be the following structure: