I don't fully buy those minimum expansion velocities. I don't shoot the 250 but I do shoot the 200 and have done so since it was introduced. I have about a dozen shots that I have taken deer at 200+ yards with I think 3 at 300yds or greater with a max or 338 yards. Yes I hit every shot at that range in fact ever one was a bang-flop.
I recovered a bullet from 209 yards, the bullet penetrated fully and stopped under the off side skin. It was fully expanded to the point that upon removal the lead separated from the jacket.
I did not recover the 338 yd bullet as it was a pass-thru hitting no bone. There was evidence of expansion though the exit wound was a little smaller than at closer ranges. But it was still an inch to inch and a half wide.
One thing I've liked about the 200SW is that it seems to still expand decent at extended ranges but also holds together up close.