Oh, you seem to be confused. You don't have to sure (do you mean shore?) up inflation in 18 months. In the Volcker's case he wring inflation in about 2 years but the oscillating target rates caused a host of negative macroeconomic effects. It would have been more effective with less pain if they had targeted rates and allowed the money supply to fluctuate.
Major, emphases on the word "major," macroeconomic changes always have a negative event on the microeconomic situation. I guess the question is, was it worth it? And from what I can see, (not relevant), Reagan got out of a big mess much quicker than Obama, and with higher unemployment than Obama to boot.