I started casting a 405 grain pure lead Flat Point .457 diameter bullet some time ago. I use the Knight orange sabot and never put more then 100 grains of Goex 2f under them. I have shot them out of my CVA Staghorn Magnum and they were very accurate. My White Ultra Mag is also very fond of them.

The down range thump was excellent to say the least. I have never hunted with them yet, but could only picture the effect of having a projectile that size hit and flatten out...