Im looking at having a Custom Hawken built in the .58cal A Rice Barrel 1" across the flats 1x66 36" Barrel. I have killed 14 Mule Deer with either the .54 or the .50 all with Round Balls have never felt at a disadvantage using a Round Ball. Will be using it for Deer as well as Elk. Anyone have experience hunting with a Round ball in a .58cal??