The term "joke caliber" when referring to the .22 rimfire cartridge is often used humorously or in a lighthearted manner within the firearms community. It's not meant to disparage the .22 LR (Long Rifle) or other .22 rimfire cartridges but rather to acknowledge the cartridge's unique characteristics and its popularity for various uses. Here are some reasons why the .22 LR might be affectionately referred to as a "joke caliber":

1. Low Recoil: The .22 LR generates minimal recoil, making it easy and comfortable to shoot. This characteristic is often contrasted with larger, more powerful calibers, which can have significant recoil.

2. Quiet: When fired through a suppressed firearm (silencer or suppressor), .22 LR ammunition can be exceptionally quiet. This quality makes it a popular choice for recreational shooting without disturbing neighbors or wildlife.

3. Inexpensive: .22 LR ammunition is generally among the most affordable ammunition available. This affordability makes it accessible to a wide range of shooters, including beginners and those on a budget.

4. Versatile: The .22 LR is incredibly versatile and can be used for various purposes, including target shooting, plinking, small game hunting, and even competitive shooting events like rimfire competitions.

5. Reduced Risk of Over-Penetration: The lower energy of the .22 LR often results in less risk of over-penetration, making it suitable for shooting in areas where safety concerns may limit the use of more powerful cartridges.

6. Learning and Training: The mild recoil of the .22 LR makes it an excellent choice for beginners and for firearms training. It allows new shooters to develop marksmanship skills without being intimidated by heavy recoil.

7. Nostalgia: Many shooters have fond memories of learning to shoot with a .22 LR rifle or handgun, which can contribute to the cartridge's nostalgic appeal.

It's important to note that while the .22 LR may not have the stopping power or range of larger calibers, it has its own practical uses and has been employed effectively for small game hunting and target shooting for generations. The term "joke caliber" is often used in a playful or tongue-in-cheek manner, and many shooters appreciate the unique characteristics and utility of the .22 LR cartridge. Ultimately, the best caliber for a given purpose depends on the intended use, and the .22 LR certainly has its place in the world of firearms.