Any question like this will be subjective. The US Military uses the .223 Remington as it's standard caliber, but most police forces use the .308 Winchester for their SWAT team snipers.
308 Rifle can hit a target over 300 yards away. The military used them as sniper rifles and they r more accurate than a .223
The .243. It's basically a necked down .308 Winchester.
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.
Compared to the 223 Remington, the case volume of the 308 Winchester is increased by approximately 80%. The 308 Win now fires a larger bullet and maintains long-range speed, but at the expense of recoil.
yes
The AR 15 is a rifle, not a caliber. the .223 is a caliber. Usually the AR-15 is made in caliber .223.
"Deadlier" is subjective. The .223 has more velocity on average, but the .308 has considerably higher muzzle energy.
A rifle with a 5.56x45 chamber can utilise .223 Remington cartridges. A rifle with a dedicated .223 Remington chamber cannot accommodate 5.56x45 cartridges. A rifle with a .223 Wylde chamber can accommodate .223 Wylde, .223 Remington, and 5.56x45, but neither a rifle with a 5.56x45 or a .223 Remington chamber can accommodate the .223 Wylde cartridge.
Both do what they are supposed to within their range limitations.
It all depends on what you are hunting.
.223 Remington can be cycled in a 5.56x45 rifle; 5.56x45 should not be cycled in a .223 Remington firearm.
no