"Deadlier" is subjective. The .223 has more velocity on average, but the .308 has considerably higher muzzle energy.
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.
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.
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.
The 308 caliber guns are more expensive than 5.56 assault rifles.
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.
No
.308 is identical in diameter to the 7.62x51 NATO cartridge (although the two are not exactly the same). .223 is identical in diameter to the 5.56x45 NATO (and M193) cartridge (though, again, they are not exactly the same). The .308 is larger.
yes
308 is more than 8 times the size of 37.
.308
It uses a 30 caliber or .308 inch diamiter projectile. .308