Flatter" as in 1 inch possibly 2 at 300 yards. I'd gladly trade that for the ability to have 300 more ft/lbs of energy
"An inch or two at 300 yards"isstill "flatter"."Almost as flat" is not "just as flat".
And by the way the difference between those two light magnun loads at 300 yards is not 300ft lbs.The 308 win -165gr load has 1898ft lbs at 300 yards,compared to the 7mm-08 -140gr load at 1833ftlbs.That amounts to 65ftlbs whichnot even remotely close to 300ftlbs.
And less recoil is still less recoil even if it is only afew ftlbs.In a light weight rifle with a smaller person,it can make a difference.
But then again in your fantasy world,with your magic gun
308 doesn't recoil at all.
So I guess there is no cartridge thatcould possibly produce less recoil.

