Pressure diecasting machine with an enclosed die cavity (8)formed between a movable and a stationary die part (9,2) into which liquid metal is injected via a die sprue (6) by a plunger (4) in a casting chamber (3) into which the metal is introduced and having at least one post-compression plunger (16) acting on the filled metal. At least one post-compression plunger (16) is arranged to enter the die sprue (6) in a position offset to the longitudinal axis (A) of the casting chamber (3).