Good to see that it hasn't totally died then
I'm going down the route of backward engineering what I've gleaned from youtube video's of the Bisley set-up. It's been a bit of a game trying to judge dimensions but I think I've got it pretty close. The only stumbling block now is the target dimensions, hence the question.
One major difference with my rig is in having ten targets instead of nine and introducing two back-to-back series of ten shots for each shooter to better suit the requirements of small-bore and reduce the amount of running up and down the range required. As we share range time with a field target club, the fewer cease -fires called, the happier everyone is.
Iain