Regarding the jackets on the Speer hot cor's. It appears this was an optical conclusion. The 180 grain I had sectioned some years ago and it had been in with my collection and darkened with age. A couple of strokes with a file brightened up the gilding metal and now it looks thicker too. It looks like most of the Speer and Hornady bullets have jackets of the same thickness. Even the .308 220 gr Hdy is no heavier than the 150gr RN that is used in the 30-30. That 220gr is recommended for Dangerous Game!
