Looking at the lists of perfomance charts on the RFM (Section IV on both Part 1 and Part 2), there is no such data. You only will find charts for Hover Out of Ground Effect at Take Off Power AEO and Forward Climb Performance OEI (Sec IV, Part 1) and Hover Out of Ground Effect Endurance AEO (Sec IV, Part 2).
Sometimes military manuals have more specific performance data, but I have never heard about a military S-76. Glad to be corrected (and informed about engines and specs) if wrong.