Steelhead,
Yes I had been thinking that the heaver the bullet in 7mm the thicker or tougher the construction. Meaning deeper penatration for bigger game. In the past I used the 180 PSP core-lokt (30-06)on small Florida deer for years. Many times the bullet would stop just under the skin on the far side. Especialy on shots 150 - 250 yards. I was givin a handful of 220's and tried them. They just penciled threw and the tracking was on after that.After finding them, even though it was a good lung shot I had to look for the exit hole. Same size as the bullet. No exspansion.