I’ve never really understood: what is the supposed benefit of a 2 stage trigger?
It is feel? You are immediately at the wall of resistance with a single stage trigger whereas with a 2 stage, you take up some pressure and effectively hold it. It has no bearing on the force needed to break through the second stage but I guess it is the psycological concept of knowing you have already held some element of the force required to operate the trigger and you are now absolutely on the point of breaking through the final stage to release the shot. With a good single stage trigger, you just contact it and have no feeling apart from knowing you are in contact with it.
It is hard to explain but if you have used both, then you will now which you prefer. I have both on a variety of air rifles, rimfires and centrefires. Without question, for me, the 2 stage triggers are better and promote a much better chance of out and out accuracy from a stable base. For most stock hunting situations where you are not really needing out and out accuracy, I would imagine many people prefer single. Likely just what people started with maybe. I always shots 2 stage triggers as a kid, so that is what I expect maybe.
I have single stage triggers on S&L's and Mauser rifles. If I could change them to 2 stage triggers, I would do it in a heartbeat. Others are opposite. I think it is just personal preference.
The tuned Rekord trigger on my HW95k air rifle is so perfect it is hard to explain. There is no give in it at the final stage at all. The first stage take up is light but so predictable. It just feels comforting knowing I have the trigger under control. Like I am part of the operation rather than just blindly contacting a motionless object that will move shortly when I apply enough force.
Think of it like being ready on the sports field. A good footballer does not stand still waiting to receive the ball. They are on the balls of their feet, constantly moving waiting to receive. Like a slip fielder moving just before the ball is bowled to ready themselves in case a catch comes their way. And good golfers are not static at address. There are movements and trigger movements in their actions which provide a base to then operate from. That is the best way I can explain it for me. I feel more ready and more involved. And the results on targets speak for themselves. That doesn't necessarily mean they are the best for shooting deer at 80yds off sticks in a crosswind.