outdoorsman74,

I tested the 200-grain .30 caliber "new" Grand Slam from a .300 Winchester Magnum in dry newspaper, which provides a very good indication of what might happen when a bullet it hits heavy bone. Two out of five lost their cores.

I liked the old Grand Slam a lot, since it always held together in tests or game.

“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck