My first test on the the new Woodleigh Hydrostatically Stabilised 470 500 Grain Bullet went well as our Aussie friends have said it would. First test would give a slight edge to the North fork for straightline penetration, but it would be splitting hairs. I would not hesitate to hunt with this bullet. The nose flattened some and expanded approximately .020. The "Meplat" was measured using an ink stamp.