txhunter58-You made the same assumption that many others make and it does generally hold true for lead bullets and for conventional bullets.The various premiums out there don't behave in the same way as conventional bullets so assumptions that apply to conventioal bullets do not always apply to premiums.When test results like this are brought forward many people refuse to believe them and come up with excuses because they don't want to admit that the assumptions they have believed for so long could be incorrect.I have used 140 gr partitions out of my 7mmstw to take several moose and elk and have yet to recover a bullet.You can't get better penetration than that.