Minimum OAL is one thing, but attempting to predict the pressure maxima at a given point of set back, along a specific propellant burn curve is almost impossible without a Mann barrel, strain gauges, a universal receiver, and test instruments.
It does seem anecdotally that the heavier 180 grain bullets have a distinct numerical representation in pressure incidents with the .40 cartridge.
Imported from the future in 1984. Returned to the past in 2007
Dear God, this is one of the dumbest ideas I've ever heard. It's got to rank right up there with CALEA. -Pepper45