Just started loading the 180s for my 300WBY great so far. Havent had a chance to run em over a chrono or at any longer distances, but they are shooting well at 100. Didnt notice any of the described problems.
I admit that I know just enough to be dangerous.....but dangerous at ever extending distances.
They've ben working great in my STW. I'm using a forster micromiter seat die and a rock chucker. I haven't noticed much difference in seating pressure from any other bullet I've tried. You can feel the grooves while the bullet seats though.