I ran the 180 E-tip two years ago and noticed the big entrance holes as well. It almost appeared like the entrance holes were made bigger from the inside out. I did not think much about it at the time but it was different.
Steve
That's how I would describe what I observed too. Left me scratching my head and wondering what Nosler might be packaging inside those little translucent plastic tips.
My entrance holes were bigger than I expect to see on off-side exit holes. I had two hits and entrance wounds on my animal, and they both blew big holes in the hide on the entrance side.