223

.223 — Ammunition Cartridge Specification (for .223 Remington)

Remington Arms · 1964

Developer
Remington Arms
Category
Documents
MIME Type
application/vnd.something.223
First Released
1964
Open Format
No
File Signature
N/A
At a Glance
.223
Ammunition Cartridge Specification (for .223 Remington)

The .223 file extension typically refers to the .223 Remington ammunition caliber, not a standard digital file type.

Reviewed on May 6, 2026
Compression
N/A (Not a digital file format)
Transparency
N/A (Not a digital file format)
Editability
N/A (Not a digital file format)
Best for
Ammunition caliber designation

Key Features

  • Designates .223 Remington ammunition caliber.
  • Rarely used for digital file formats.
  • Lacks a universal digital file structure.
  • Associated with shooting sports and varmint hunting.

Best For

  • Specifying a particular type of bullet caliber.
  • Situations where custom data file naming is adopted.

Less Ideal For

  • Standard document storage.
  • Image or multimedia files.
  • General data exchange.
  • Software configuration files.

Common Use Cases

  • Identifying ammunition (.223 Remington).
  • Potentially used for custom firearm accessory specifications.
  • Rarely, a custom data file for specialized software.

How to Open It

  1. If it's an ammunition specification, it requires no software to 'open'.
  2. If it's a custom data file, you would need the specific application it belongs to.
  3. Attempt opening with a plain text editor to inspect contents, but expect unreadable data.

What is a .223 file?

The .223 file extension is not associated with a common digital file format. Instead, it is most frequently used to denote the caliber of a specific type of ammunition, the .223 Remington. This is a popular small-caliber rifle cartridge used for hunting varmints, target shooting, and in some military and law enforcement applications. It is distinct from the 5.56x45mm NATO round, though often confused due to their similar dimensions and interchangeability in some firearms. Files with a .223 extension are exceptionally rare and likely custom or proprietary.

Programs That Open .223 Files

PlatformProgram

Common Problems with .223 Files

⚠️ Trying to open as a digital file.
Recognize that .223 usually refers to ammunition caliber, not a file format. If you encountered a .223 file, it's likely custom and requires specific software.

Frequently Asked Questions

What is a .223 Remington?▼

.223 Remington is a popular rifle cartridge known for its accuracy and suitability for varmint hunting and target shooting.

Is a .223 file the same as 5.56mm ammunition?▼

While similar and often interchangeable in firearms, .223 Remington is a civilian cartridge, whereas 5.56x45mm NATO is a military designation with slightly different pressure specifications.

Can I open a .223 file with a word processor?▼

You can try, but it's unlikely to display readable text unless it's a very rudimentary custom data file. It's not a standard text or document format.

Technical Details

As a designation for ammunition, .223 refers to a specific cartridge size: a .22-caliber projectile with a case length of approximately 2.23 inches. Digital files with this extension are highly unusual and lack a standardized structure or specification, making their interpretation dependent on the specific software that created them.

Did You Know?

The .223 Remington was developed by Remington Arms and introduced in 1964.
Its popularity has led to its use in numerous hunting and sporting rifles worldwide.

Security Information

As .223 is not a standard digital file format, any file bearing this extension should be treated with caution. It's highly unlikely to be a standard executable or document, so opening it could lead to unexpected behavior or data corruption if it's a proprietary or malformed data file.