I feel where you're coming from on this but so many other things go into the drop......... As a decent Buff pilot, I'm never at full throttle. Too many variables come into play. Minor course adjustments that knock you back 2-3 mph.
(The slow bomber is a better defender.)
I really don't think somebody ups, plots the course from 100 miles out and just flies to target and drops.
Do they?
And besides, 234's aside........ Full power? What is that.... 276mph?