Both do what they are supposed to within their range limitations.
It depends. A '.22' rifle, if you mean centrefire, includes alot of calibres as the term is generally used to mean any ammunition loaded with a .224 calibre bullet.Such calibres include .222 Rem, .223 rem, .22-250, .22BR, .22 Dasher and plenty of others.Of these, the .22-250 is by far the most powerful. It is essentially a .250 Savage case necked down to take a .224 bullet and so holds alot more powder than any other '.22' round.In terms of foot pounds of energy, a .223 Remington will generally produce about 1,200 FPE whilst the .22-250 will produce about 1,750 FPE.************However, if by "22 rifle" you are referring to the RIMFIRE .22, such as .22 LR, the .223 is much more powerful.
No.
Not the rimfires (.22 Short, .22 Long, .22 Long Rifle, .22 Magnum), but centrefire cartridges in the same calibre range (.22-250, .222 Remington, .223 Remington Magnum, .223 Remington, etc.) can be sufficient for coyote.
.223 inches.
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.
Yes, they do shoot the same projectile although the 22-250 takes a heavier charge of the same powder over the .223.
22 250 Remington
.223
Check your local sporting goods stores- but in GENERAL, the .223 is a more popular cartridge, and is less expensive than 22-250.
Not without modification. Some 5.56x45 and .223 Remington rifles have a device available for them which allows them to fire .22 Long Rifle rounds... typically, the device replaces the bolt carrier group.
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.
With equal 55 grain loads, the .22-250 would be on account of the higher muzzle velocity.