METAL DETECTORS – Which coil size is best?
A. It’s no coincident that metal detector manufacturers provide searchcoils specifically designed to target a particular environment and detecting application. Therefore, don’t underestimate the importance of equipping your metal detector with the coil best suited to fulfill your hunting needs. For the all-purpose detectors, the standard coil that the detector comes equipped with is usually the optimum size for most hunting. In extremely trashy areas, a smaller coil (4″ or 7″) usually will bring better results. The reason for this is that even though the smaller coil has less depth for coin sized targets, good targets will not be masked out by bad targets lying next to or over them. And if you get into a relatively clean or trash-free area, a larger coil (10 1/2″, 11″ or 15″) will usually yield better depth and a wider area of coverage when trash masking of good targets isn’t likely to be a problem.
