I am using a lee 180 gn. mold I baught at a yard sale. It is for my 30-06 and 30-40. Still need to test them though. After casting, Gas check, and lube . they were weighing between 179 and 179.8 I used a mix of WW. and some already fired cast from range scrap. Im guessing they are fairly hard. Still need to get a hardness tester.