I think this is one of the reasons we see old guns with the sights changed. Small dovetail sights arent uncommon to see. The height (elevation) and windage could then be tuned fairly simply.
One of a pair of Colts Navies attributed to Hickok has a small dovetail front sight, the other in the pair doesnt.
"Far better it is to dare mighty things, to win glorious triumphs even though checkered by failure, than to rank with those poor spirits who neither enjoy nor suffer much because they live in the gray twilight that knows neither victory nor defeat." -Theodore Roosevelt-