PowerBelt Bullets AC1598 Pure Lead 50 Cal Lead Hollow Point 295 GR 15 Box. With PowerBelt Bullets, you are shooting a muzzleloading bullet designed specifically for muzzleloading rifles, as opposed to a pistol bullet adapted to fit a muzzleloader. Unlike sabots, PowerBelt Bullets are full caliber sized, easy to load, and do not require cleaning after every shot. The PowerBelt base provides consistent gas pressures for almost identical bullet velocity every time, and protects the tail of the bullet from flame cutting. This 50 caliber bullet is 295 GR with a hollow point.