ORIGINAL: Briman
Its the short case, short cases offer better efficiency and consistent powder burn over a longer case
Except that a .308 doesn't have a short case- its a bit shorter than a 30-06, but looks looong compared to any of the PPC cartridges which are about as wide as they are long in the body. A short fat case wouldn't explain why a .300 magnum or .338 lapua magnum is a better long range cartridge than the .308, let alone that the .223 is at
at least as accurate as the .308.
If you want to go shorter, one could claim by the same reasoning that the 7.62x39 cartridge should be much more accurate than the .308.
One can make a case for
PPC cartridges being short and fat and accurate, but it just doesn't wash with the .308, its a completely different bird altogether.
The 7.62X39mm is indeed a very accurate CARTRIDGEwhen loaded with precision and fired from an accurate rifle! The reason it appears to have such a sorry rep is easily expressed: SKS/AK 47!! After all, the PPC's are close derivatives of the 7.62X39mm via the ".220 Russian".......
