Tommy, don't want to p88s on your parade, but two things spring to mind here, 1/ saw a thread here some time ago referance the fact that old heads can become hardened/brittle from the forming process of making/swaging the heads to the lead core. From what I can remember from my apprentice days its called season ageing? Also, I can, remember having problems some years ago with Winchester 270 bullets going straight through animals without expanding, from my days with several FC rangers, they were sent back due to just going straight through and causeing lots of long follow ups on wounded deer. It also happened to me as well, and was the reason I started reloading 30 odd years ago. Hodgesons H4831 58 to 59 grns in my Manlicher M with various 130 gr bullets was accurate and kind on the shoulder. Others may have had the same issues, but definately Winchester 130 factory loads. deerwarden.