ORIGINAL: dmurphy317
One thing you may want to consider though is a peep sight. A peep gives you a sense of a scope (round sight picture) while maintaining the non magnified simplicity of an iron sight. Many old Sharps, etc. had long range peep style sights available.
Seen a few peep sights mounted to the tang that would do the trick. The Soule sights one sees on Sharps can run into mega $$$ real quick. Seem to recall that a Montana Vintage sights run anywhere from $300-500 for the tang portion only.
http://www.montanavintagearms.com
iffen yer that interested in somthing good out to around 1500 yds.
Its still possible to pick up a tang mount "hunting" peep after the old Marbles-Williams design from Brownells for a whole lot less, like maybe $175+.
Even with that it'll still take a fair bit of practice...
Keep yer powder dry,
D.