I looked at that site and saw his sectioned post but didn't see any recommendation on impact. Ill keep reading unless you have a link to that you can sharePetey308 on long range hunting has sectioned them, measured jacket thickness and made an impact recommendation.
Thanks for the info.He recommended 2000 and 2200 minimum might be a better number.
He tends to be a bit conservative but has a good amount of real world data with different jacket thicknesses and lead alloys