Got ring #2 coin shooting in a park today. I prefer the concentric coil, as it is dead on for pin pointing. Saves me a lot of time compared to the DD coil. Super depth not needed when coin shooting, just a good ear.
John, nice days digs and Congratz on the ring. My ATP just came today. It came with the 5x8 and the 6x9 concentric along with the stock coil. Was wondering about that concentric, thx for the info. Test run today and Son that thing is fast in the thick stuff.