RE: Maximum Confident Shooting Range???
For me, it depends on the situation. I feel pretty comfortable shooting out to 40 yards. But if it's a further shot than that, then the situation needs to be just right, in order for me to take it. A deer can do a lot on a shot at 50 yards. Weather, Deer Language, and archery gear, would depend on whether I'd take a shot over the 40 yard mark.
Also, using a rangefinder to be exact in the distance would be a "Have to do" thing. Like most hunters, I have a hard time distinguishing the exact distance that far. 46 vs 49 yard shot, is tough to acurrately range, without a rangefinder.
But like everyone else, I prefer the 30 or less... everyday.