The oil and gas company is following the right strategy to maximize value for investors.I'm going to cut to the chase here. Devon Energy (DVN -1.44%) is a buy, provided you share management's view on its capital allocation policy. That's the key to the investment decision here, so here's an outline of everything you need to know before buying the stock.Devon Energy's capital allocation policyThe company's policy is to return 70% of its free cash flow (FCF) to investors, with the remaining 30% used to reduce ...