It depends on what you mean. Strictly speaking, a .223 cartridge has a .22 caliber bullet, but when people say .22, they are usually referring to .22 Short, Long Rifle, or Magnum cartridge, which is different than .223.
223
The .22 Long Rifle is a rimfire, whereas the .223 Remington is a centerfire cartridge. The .223 uses a longer 'spitzer' projectile vs. the rounded projectile of the .22 LR. The .223 tends to be a heavier projectile, and has a much higher velocity than the .22 LR.
The .22 WRF uses a larger case, and has a slightly larger bullet diameter (.224, as opposed to .223). The .22 WRF uses a flat nosed slug, as well.
Check your local sporting goods stores- but in GENERAL, the .223 is a more popular cartridge, and is less expensive than 22-250.
The .22-250 is .001 inches larger in diameter, and has a slightly longer case. With projectiles of equal grains, the .22-250 would have an advantage in energy produced.
Yes - since the digit in the units column is larger, 22 is larger than 21.1.
No. The .243 is a larger calibre, and the parent case is the .308 Winchester, necked down to accept the smaller projectile. It's considerably more powerful than the .223.
201
22 cubed = 223
No But the Caliber is the same but theres more powder in the 223
Yes, a .308 Winchester round is generally considered more powerful than a .223 Remington round. The .308 Winchester has a larger bullet, more powder behind it, and generally produces higher muzzle energy than a .223 round. However, the suitability of each round depends on the intended use and personal preference.