Out to about 32", I seems to get more velocity with less chamber pressure at every step.
I think rifle balance is more important then barrel length for handeling, but your milage may vary.
My Target 7WSM currently wears a 28" barrel and will be wearing a 30" barrel when this one is burned out. Free velocity and lower chamber pressure (keys in the Las Vegas desert where it gets a bit hot in the summer).
When I lived in Houston, I shot the same rifle wearing a 26" barrel and ran noticably higher pressures at the same velocity. That load did not survive the Vegas Summer - popping primers is not my idea of a good time. When I switched to the 28" barrel, I reduced the load by nearly a grain of powder and had the same velocity.
There is no need to push your rig to 3,100 fps with the Berger 180s to reach 1,760, you can comfortably get there - at least at 2,200 ft alt - with 2,950-3,000 fps.