As DP noted in an earlier post, I am kinda partical to this sight- especially for hunting. For target shooting, it still worked well enough to gather a few 1sts at Rondy - as a matter of fact, in every round ball match I used it in. The longest shots were in the 175 to 200 yard range.
In this picture, I've used a flash to brighten the pic. so the sight profiles could be seen. Actually, the sight picture in the bottom picture, is the 200 yard zero for the hunting load. If I didn't move the rifle and raised the next leaf, the bead would be sitting in the valley of the 'v'. The British proved this to be the very best open hunting sight there is, to the point of filing it into all the rifle's express sights, all the way to a 500 yard zero on some rifles. The design is over 150 yards old and is used on all double rifle as well as modern bolt action African rifles sold today.