Long shanks perfect mushroom---thing of beauty "Craig Boddington", and I agree. If a bullet totally pancakes out then it is not that far from fragmenting, note what happens to Frontier Gander's PB at 70, 80, and 100g then 125, they totally pancake out then the next speed up they fragment. So in my mind the best bullets are those that have long shanks and are perfectly expanded out at the head of the bullet, like the 300g Gold Dot in the picture, which is what I shoot. In general the 300g bullet for bullet has a higher BC, therefore retaining energy to penetrate thru the animal on long shot. I have shot some 240 Knights and 250 XTP and and killed deer with them, they did not shoot thru and were generally on the off side under the hide. I have also shot the 295g PB, and I had fragmenting problems with those, but I was pushing them with 150g of powder. That was before I joined the forum and got educated on loads, PB, etc.
Best wishes,
Chap