RE: Too long of rod?
I shoot a couple rifles like that all the time. The loading jag and end stick out past the end of the muzzle. The worst part is when your loading a sabot or roundball and you suddenly move down to the muzzle and that thing hits your fingers. Take it out before you use the short starter. Your fingers will be most grateful.
When the brass jag gets too dirty, soak it in brasso and then take a metal short brush to it. They clean right up.