A .530/.535 ball weighs around 230 grains and has a muzzle velocity of around 1800 fps with 85/90 grains of black powder from a 32" barrel. At 100 yards it's still traveling at a little over 1300 fps and is moving about 400 fps faster than the muzzle velocity of a standard military .45 ACP 230 grain bullet. Most folks would consider the .45 ACP to have adequate stopping power for a point blank shot on a whitetail. At anything considered "woods range" (75 yards or less?) a broadside shot into a whitetail will make a big hole going in and a big hole exiting.