Tx puffin, interesting thread.
I guess I am one of those guys who believes that you can get just about any barrel to shoot significantly better by hand loading. So far I have been lucky enough to work out an acceptable load just messing with charge and jump mostly. Some projectiles like the Berger VLDs take a lot more work and experimentation, but that to me is the fun part.
Also kinda depends on what your criteria are for precision...