Specifically, it's probably what Col. Jeff Cooper refers to as a two-stage or military trigger (The Art of the Rifle, p.55):
With the two stage trigger, the initial movement of the trigger must be achieved before the actual firing pressure is applied. This first movement of the trigger, which may be as much as a quarter of an inch in some cases, is lightly sprung and is referred to as "take-up" ... I prefer a two-stage trigger to a single stage, partly because I think that it is mechanically more reliable, but mainly because I grew up on the militry trigger and find it more comfortable.So what I thought was a "spongy" trigger seems to be a two-stage one. I'm a bit humbled to find my self in disagreement with Col. Cooper, but I didn't spend part of my youth at Uncle Sam's summer camps, and he did.
I recall that he had a lot to say about the Beretta 92 (much of it not particularly complimentary) in To Ride, Shoot Straight, and Speak the Truth. I'll look though it and see if he, too, complains of the Beretta's trigger.
In any case, I think I'll try it again with an open mind.