I have requested our own land be signed off for 243 and told it won’t be signed off for any calibre, however I can shoot on it as I have open cert For .22-250, but closed for 243! The land totals 28 acres which has sheep, shot several foxes off it over the past couple of months so justification is there. The 243 was added in feb as a new calibration and came back closed for some daft reason. FEO said there is no minimum area but his boss won’t allow it. Crazy?