We have had several performance issues with the shock waves over the past couple of years - We shoot alot of deer here in West Michigan - Were trying to get the buck doe ratio in line - My son & I have taken 4 this year alone. I cant say weather its a quality control issue or what. We have taken several deer with the SW some with no issues & quite good performance but more & more the bullets are going thru without any sign of expantion at all with the deer traveling several hundred yards before expiring. Anyone else seeing these trends in your camp?