They used an expression in the old days. It was................."Loaded for bear"
It meant it was double balled. Personally, I wouldn't do it. One ball works fine for me. If you shoot a bear in the vitals it's no harder to kill than a deer. I'm a still hunter, and my style is to get as close as possible without the game knowing i'm there. Sort of like a cat hunts. My shots are all within bow range, or under 40yds. It's a good range for the .50 PRB no matter what the game is in Colorado.
If you plan to take longer shots. You might want to rethink this. A double balled load is not a good choice for long shots.