That's the ones. Pretty simple to sort, there's no windage. All I do is like Andy, dial it back to optical centre, get 55 yds pretty close by winding up the grub screw, then lock it off. Takes about 20 secs longer than a normal set.
The only thing I don't like about them is you need 4 allen keys to put a scope on with them, one for the scope clamps, one for the rail clamps, one for the adjustment clamps, and one for the grub...! Oh that and sportmatch scope clamp bolts always rust!
But they're my fave for the moment, far simpler than b-squares...
BFTA/NSRA County Coach
CSFTA Chairman/BFTA Rep