We use a Loos gauge and typically run 25-30 on the new black gauge (pretty near the high end for 3.5mm rigging).
any idea what that is in lbs? I know my mystere needs to be around 400
Found this on the web: North Sails It has a chart mapping the old Model A, & Pro gauges to pounds of tension. My numbers are from a Pro Loos...so I'm at/above the 390 lbs mark.