I can't help you with your Buckmark problem but I do agree, there seems to be very few options if you're looking for precision type target shooting rather than an American two handed/scoped version. They have a high sightline to start with and plonking all sorts of stuff on top really doesn't help.
The old Browning target pistols were very well made, accurate and reliable pistols, however they (and others from USA) were never seen at the top level of international shooting, mainly, I believe because of their high sightline compared with the european match pistols such as Walther, Pardini, Britarms etc. Hammerli were also slow to adopt the low sightline in their semi-auto match pistols and lost a lot ground when trying to catch up.
Browning Match 150 with Bowler grips.
Britarms 2000
My current muzzle loading pistol (.32 Patriot)
![Image](http://i.imgur.com/bZnILQJl.jpg)