From Pune to hyderabad,its RLWL. So in sleeper class anything WL more than 20-22 will be a risky affair. I had two personal experience of these. One time it was RLWL 31 which reached RLWL 14 at the time of chart preparation and second time it was RLWL 21 which reached RLWL 8. So instead if you want to book then book ticket from LNL and boarding point as PUNE. LNL is under GNWL quota so very huge quota of seat is present.