Warren Buffett's incredible investing track record is why most investors watch his every move. The billionaire investor has led Berkshire Hathaway to a compound annual gain of nearly 20% over the past 57 years. That  compares to a 9.9% gain for the S&P 500. Investors often follow Buffett when he buys or sells a particular stock -- with the hope of winning over the long term just like this famous investor.

In the most recent quarter, Buffett made a few adjustments to Berkshire Hathaway holdings. And one of these moves was to cut its holding of healthcare company McKesson (NYSE: MCK) by 11%. If you want to score a long-term win like Buffett, should you follow? Let's take a closer look.

It's important to note that, during last year's tough market, McKesson shined. The company outperformed the market by far, climbing more than 50%. This wasn't a random gain. McKesson offered investors a few good reasons to invest during troubled economic times.

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Source Fool.com