Made it out again this morning. This VIDEO shows what transpired.
















The chronograph was placed at 13 feet, and it measured a speed of 2170 fps. This calculates to a muzzle velocity of 2190 fps. The powder charge was 130g Blackhorn. Distance from rifle to the jugs was 25 yd, and at that range the bullet was traveling at about 2070 fps. The bullet was apparently two pieces when it entered the fourth jug, which one sees in the following photo.









Part of the bullet stayed in the fourth jug; most of the bullet seems to have exited out the right side, which one can deduce from the hole in the side of jug 4 shown in the next photo. The fifth jug is intact, and the piece of the bullet left behind in the fourth jug is shown sitting on top of the fifth jug.