Davec2,
I don't know if that sight is pc. or not, but I can tell you that they work and work well. A good friend of mine puts those
sights on most all of his guns. He refers to them as a "tombstone sight". I have shot them a lot of times, especially on
squirrel rifles. They gather the light exceptionally well but you have to counterbore the front side of the sight so you don't
get a reflection. You just need one hole to sight through, maybe 3/16. Depends on the shooter's preference. If you leave
small hump on the front of your tang, you can dovetail them and mount them right at the breech. That way, you can move
your sight a bit if you need to without distorting your wood. When you use the larger hole in the sight, it seems that your
front sight just automatically centers it's self with the peep hole. No need for multiple holes. That's all I know.
Can you post some more pics of that sight that you posted, maybe parallel to the barrel. That's a fine looking sight. I think
if you was to try one, you would like it. I certainly do. Regards,
MikeH