I bought a heavy percussion muzzleloader target rifle. It weighs 25.5 pounds. They are used in chunk gun shoots at 60 yards. Prone position, over a chunk rest. The heel of the gun must not touch the ground. A series of 10 card sized targets with an X printed on them are used for scoring. You bring your sighter target, whatever shape and size bullseye you want and shoot 3-4 shots for group. Then take your first X target and place it behind the center of the group and fire for score. Keep replacing the X targets one by one and shoot 10 of them. Each shot is measured from center of X to center of your shot. Add all distances and shortest total wins. Open iron sights only. It’s a .50 caliber slow twist Ed Rayl barrel 1.5” across the flats. Takes 130 grains of 3F according to the previous owner.