Due to large amounts of competition some of the country's largest craft brewers' sales are hurting. “It is more competitive than it has ever been,” said Ken Grossman, founder and chief executive of Sierra Nevada Brewing Co., the No. 2 U.S. craft brewer by volume. There were 5,562 total breweries in the U.S. as of June 30, up roughly 900 from the previous June, according to the Brewers Association. Many brewers are finding that they hit a wall with sales after they surpass 100,000 barrels, said Benji Steinman, President of The Tracking Firm. After years of strong gains, American craft brewers a now bracing for a shakeout. Shipments are falling for many independent brewers stuck in the middle between local niche brands and competitors that were bought by heavyweights such as Anheuser-Busch InBev and Molson Coors.