Then we have been in agreement on that point, the rest is just back story.
Nothing over powered about the .303. Other even more powerful cartridges were sucessfull in autoloading infantry rifles and LMGs.
The Assault Rifle and its intermediate cartridges are an entirely different animal, no better than comparing a intermediate rifle cartridge to a pistol cartridge. Some overlap there these days as well.
The 150 gr loads which were never adopted would have been better suited to the lightweight No.5 Carbine, lesser recoil and lower trajectory, plus less stress on the lightened action body, etc.
A faster burning propellent with coolant additives would have reduced muzzle blast. But there was no impetus to further develop the cartridge after WW2.
Last edited by Rainbow Demon; February 1, 2013 at 06:16 PM.