What does "LR" mean in 22 LR, and how does this caliber differ from others like 9mm or .223?

"LR" stands for "Long Rifle" in .22 LR. The 22LR is a rimfire cartridge with low recoil and sound, and the round is incredibly fun to shoot suppressed. Differences include: Size and Power: The .22 LR is smaller and less powerful than 9mm or .223 Remington. Usage: Ideal for target shooting, plinking, and small game hunting. Recoil: Produces minimal recoil compared to the larger calibers. Cost: Generally more affordable ammunition.