Just keep this in mind...
The stock coil is very optimistic in its tones, i.e.. if you get a deep target that sounds a little bit like a coin bit very iffy, it may be a coin but probably not...
Now with the 5x8- If you get a very deep iffy signal that sounds like it could be a coin, there is a good chance it is!
The smaller coil will hit pretty deep with no more than an inch of depth loss compared to the bigger stock coil.. I have found silver dimes and wheats at 9 inches plenty with the 5x8..
Another line of thought that you or others reading this might not have grasped yet...
Knowing how your coils field is shaped underground will help you understand how if you intend to not miss any good targets, you don't really loose out on coverage using the smaller coil.. With either coil, it is best to overlap your swings a lot, only moving forward 2 inches every swing. Using this method you will be getting the MOST coverage of your deepest targetable zone. The size of your field gets smaller as you get further away from your coil, meaning you can here a shallow target on three separate swings as your moving forward, where as the deepest targets you will only pick once up if your coil is centered directly over it. On the deepest targets, one inch forward or back can result in not hearing anything...
Good luck!!
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