The concensus among several people on the nasaspaceflight.com forum who simulated the numbers, is that 13 mT is already the estimated capability of the reusable

The concensus among several people on the nasaspaceflight.com forum who simulated the numbers, is that 13 mT is already the estimated capability of the reusable F9 v1.1; the full capability of the expendable configuration is approx. 16 mT to LEO.