Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to clean a muzzleloader [title] Make sure the firearm is unloaded. [step] You can do this by pulling back the bolt of the gun and checking for a ball and powder, or tilting the gun forward at a 45 degree angle. If you're using a traditional muzzleloader ball as ammunition, it will roll out the front of the barrel.

Ending1: Never try to look down the barrel to see if there is a ball and powder in the firearm. [substeps] Attempting to clean any type of loaded gun could result in serious injury or death. Ending2: [title] Cock the trigger to eject the muzzleloader ball. [step] Tightening the trigger is not always necessary and may result in wasted ammunition. Ending3: The sight should hang over the edge of the barrel, so it is easier to clean. This means there should be no screw/bolt in the front, just a slot about the length of the book cover in front of the receiver. Ending4: [substeps] The nearly universal way to clean a muzzleloader ball is to wipe it down using a stiff-bristled brush. Many people hate to take a bristle brush.

Answer format: ending1/ending2/ending3/ending4