Eurosabre - best coil in heavy iron trash

[margiop]

Hello this is Daniel from Italy.
In past I asked your opinion on a metal detector for a heavy iron polluted environment.
You suggested me a Fisher 1236-X2 and a Cibola.
The Fisher was not so good on rejecting the many grenade splinters on the ground (it is a I WW's field).
So I decided to buy a Tesoro, I found a good bargain and bought the Eurosabre.
Could you suggest me which is in your opinion the best coil for that job ?
The mineralization is not a problem, but the target separation will be, because there are a lot of military badges between all that iron.
I have the 9x8 coil, what do you think about the 5.75 concentric one ?
How much depth will it have on a 22 mm copper coin, for example ?

 

[Monte]

7" concentric coil, at least, and probably opt for the 5

 

[margiop]

Many thanks Monte, I always listen to your advices.
In fact I also have a 6000 xl pro with a 600 Bluemax on it, it is a great detector.
I think I would go to the 5.75 concentric coil, 7 inches is a good depth.
What do you think about the 12x10 concentric coil ? Is it so different from the 9x8 concentric one ?