Picked one up a month plus ago and put a Vortex 1x24 scope on it.  I'm casting Lyman Plains bullets and sizing them to 0.501.  I've been using punched wool felt wads over 90 grains of Goex 2f followed by a lightly lubed slug.  I'm getting 3 shot touching groups at 50 yards so far.  I've only tried once at 100 yards and was about 6" low, but the 2 shots were touching, directly below the bullseye.  I intend to raise the 50 yard group to 2-3" high and hopefully be somewhere around 2-3" low at 100 yards.  So far I'm liking it, but I never thought I'd shoot an in-line.  I've been a traditional percussion or flint/open sights guy all my life, but my old eyes don't do well with open sights any more.