It's actually for an office door with a self closing mechanism and an electronic security strike. The lock fits loosely in the security strike when latched. I had put felt pads on the door frame to dampen the sound as it was quite loud before (wooden door hitting a metal frame). The pads worked, but the door still bounces in the security strike when latched closed (loose fitting). The door is mainly glass with a wooden frame mounted by four hinges and set into a steel frame.
How can this be adjusted to alleviate the bouncing effect when the door latches closed?