Guest User November 16, 2020 Muzzleloading, Blackpowder 101 Muzzleloader calibers and their matching drill bits | Use this to make a loading block Guest User November 16, 2020 Muzzleloading, Blackpowder 101 While not necessarily historically accurate, loading blocks are a great way to keep the fun going during a muzzleloading shoot, afternoon on the range, or woods walk.