Just guessing, having not run number, but just finished watching Shawn Carlock's first CD for the umpthteenth time this afternoon. (Recovering from surgery.
338 Edge - 1600 + yards
338 Allen Mag - Maybe about 23/2400 yards.
I think it comes down to the lowest velocity that the 300 SMK will perform terminally.
The Allan Mag is an orbit or two beyond the Edge.
Neither is a sloutch.