Are you sure it's the transfer bar travel that requires full trigger travel?
I just checked a couple of revolvers with transfer bars, and the transfer bar is well up in position, about half distance of the trigger pull.
But the hammer does not fall until the trigger is at full travel, just like every revolver I've ever owned, with or without a transfer bar.
What auto are you referring to?
One of the hammer fired ones, maybe.
They use a different type trigger design than striker fired guns, and can have a short take up that requires a nearly full release of the trigger.
Was your previous experience with a striker type?
Lock the doors, they're coming in the windows.