Thanks to Nickudu for scanning and hosting this article which provides some field data about how bullet nose shape (flat nose versus round nose) influences penetration depth. For the unbelievers out there, let me be the first to admit that the sample space of my data is not large enough to be statistically reliable. Preferably, 10 or 20 elephants would be shot with each caliber and nose shape of bullet, but as finances preclude that experiment at present, I did what I could.

Thanks for looking!

http://www.villagephotos.com/pubbrowse.asp?folder_id=1519019

(Note: originally in African Hunter Magazine www.africanhuntermagazines.com)