Ziggy, I hunt for civil war relics here in the USA. A lot of the signals are lead from 69 cal. down to buckshot and thin brass items like buttons and insignias. Could you do any test videos using these type of targets in iron ? I have one of the early Vista Smart. Which is a good relic hunter, but I am curious on how the new 30 kHz Vista Gold with gain works on low conductors like I find in our civil war camp sites. Thanks. Mark