Young Tiger Jr NTR's upcoming film 'Dammu' is in the last leg of its post production. The actor is dubbing his lines from couple of days and it is likely to be completed by tomorrow. Dammu has Trisha and Karthika as heroines opposite NTR and the movie is expected to release on April 27 amid huge expectations. Boyapati Sreenu wields the megaphone and Alexander Vallabha has produced the movie. MM Keeravani has scored the music for Dammu.