Guwahati, Sept 30 (UNI) Shubman Gill''s record-breaking double century and Rohit Sharma''s landmark 12,000 ODI runs powered India to a stunning eight-wicket victory over West Indies in the second ODI here on Wednesday, as the hosts chased down a daunting 406-run target with 39 balls to spare and clinched the three-match series 2-0.