Jeezuz, I can't believe I waisted 5 minutes of my life sifting through some of the crap in this thread.
Ansett in WA, and Airlink ( although not scheduled as 25 ) did 25 minute turnarounds regularly, with the pilots still sitting around with nothing to do for at least 10 of those minutes ( except if refuelling ), the 71 is a similar size A/C.
Any of you guys/gals that can't do your pilot stuff in less than 25 minutes........................retire, you are obviously too slow to be operating a jet.
Someone did make a good point however, 25 minutes will be impossible with a full A320, for no other reason than the time the cattle take to get on and off, especially through one door.
my 2 cents.................