This is a link to a slow mo video of a my 16 bore with a 140 gr of FF Swiss and a 54 with 90 gr of Swiss FFF.

http://s72.photobucket.com/albums/i199/DPhariss/Video%201/?action=view&current=SLOWMOTION.mp4

At about 25 yards this rifle will dimple and crack a RR tie plate with a pure lead ball, the plate is 1/2" thick.
It will wind up targets hung on chains from horizontal bar with a reduced charge and otherwise damage steel targets as Daryl states.

http://s72.photobucket.com/albums/i199/D...oretieplate.mp4

Dan