The traditional conicals are very difficult to load without cocking them slightly. As a result they are often not as accurate as roud balls. There are a few exceptions. In my Ruger old army, I have loaded 45-70 collar button bullets and some 220 grain 456 bullets from a 45 Webley mold. Now understand that there is only so much room for powder in the chamber, and concials often take up more room that powder would occupy. I found that the Ruger barks much louder with round balls than with conicals. Additionally, the kick is slightly worse with the 456 conicals and not as accurate as the round balls. I recently acquired an Ideal 457401 mold which is about a 195 grain wad cutter meant for the Webley. I'll try those in the Ruger also. But, just so you know, I keep coming back to the round balls. The REAL bullets would probably be unsatisfactory anyway. the lower driving bands are less than 45 cal diameter while the top, to be engraved band, is around 47 cal. You'll probably end up with gas blow by and a cockeyed bullet. Maxiballs are a little less than 45 bore diameter and may not seal the chamber. May even slide back and forth when the next chamber is fired. Last, those things are nearly 3/4 inch long, that only leaves room for about 10 grains of powder in the chamber.
That being said, a "friend" has a 457 diameter hollow punch and several square feet of sheet lead. He punched out several 457 discs about 1/16 inch thick and loaded 6 of them as a stack. Flew around like lethal little frisbies. At 25 yards some were almost ten feet over to the side.
