Pepsi Bottling Group said Tuesday quarterly profit rose 9.5%, outpacing earnings estimates, and prompting the largest bottler of Pepsi products to raise its earnings forecast for the full year.

"The reality is that our volume was stronger than anticipated in the U.S. as well as in Russia, and that strong top-line growth also flowed through to the margin line," said Chief Executive Eric Foss, in an interview on CNBC's "Squawk Box."