I cannot add much to what's already been posted but I have to agree that Partitions are an awesome bullet. Before we moved to Alaska, Etta and I killed a lot of deer and elk with a 308, 30-06 and 300 H&H with 150 and 165 grain Partitions. I liked the 165's better in the 300 H&H but in the 308 and 30-06 I could go either way. Both great bullets.
Wow, I had severe failures of 180 partitions in a 300 wtby on smaller whitetails. Even on decent sized one.
Then I found Barnes.
In fairness John has told me since, I needed 200 partitions for a 300 mag.
The 180s simply didn't penetrate impressively on deer, and I was going to rely on them for elk.
But like I said, Barnes came along and solved all issues for me at once.