I might of miss it but what was your finished sight made from?(looks great)
Mine was made from a piece of weldable steel 1/8" thick bought from Ace Hardware. Weldable will rust or take browning, the other type they sell won't. I cut a piece to width and length, calculate the distance above the barrel I want (swamped barrels take a little more calculation), then I drill and countersink my peep hole. Then drill and tap a 8/32 hole for mounting. Then place the piece in a vise with the calculated and scribed line even with the top jaw. Heat it a little right at the bend then using a 3 lb. sledge fold it right over, mine are mounted through the tang so the bend is more than a right angle. Then I set up the barrel and drill a tap drill hole through the tang just behind the breech plug, much care is taken because I'm drilling through a surface at an angle. Then using the drill chuck and a tapered rod as a guide I tap a hole full thread through the tang. I cut off a piece of 8/32 threaded bolt and using JB weld I glue the bolt into the threaded hole. The sight is adjustable for height and moves .032" per full revolution. Windage is through the front sight. Mine were drilled nearly dead center of the tang and required very little windage adjustment.
I make a new front sight and take care the blade is high enough to shoot low, then sight in by filing it down.
I don't have the talent most of the builders here have so my rifles are just plain hunting rifles. My goal was a small peep that worked and was as unobtrusive as possible while still providing the desired function.