Yes - if you cut the barrels back to 24", put on a nice low bead, plus a point blank sight, the appropriate distance up from the standing breech, you'd have an excellent ball gun.
: All that would be necessary, would be to work up a load that put the barrels together.
: Check to see if it is chambered for paper or brass cases.
: Measure the bore size to obtain the proper ball size and you're away. Oh yes - do get the Greener book, 9th edition.
: Best of luck to you, keep me posted.
: I am not familiar with Freer. I assume it is in very good condition.