GUYS I NOTICED TODAY THAT THE PATTERN IM USING IS ONLY GOINT 5 TO 6 INCHES HOW CAN I MAKE MY DEPTH GO DEEPER IM BERLY LEARNING HOW TO DO THIS, I DOWNLOADED THE PATTERN IN PAGE 21. FROM NIAGRACOUNTRY , I SEEM PEOPLE DIG UP TO 12 INCHES FOR A COIN OR SILVER SO ANY HINTS WOULD BE GREAT O THIS IS WAHT I FOUND SINCE I GOT MY E TRAC NOT MUCH BUT GOT GOLD ON THE FIRST DAY ALL THIS TARGETS WARE AT 3 TO 4 INCHES , AND SORRY FO CAMERA IT LOOK LIKE SHIT PROBLEM IS DRUG DEALERS CUT THE POWER OFF AND I CANT SEEM TO HAVE GOOD LIGH IN THE HOUSE , THE PICS IS JUST 21 DOLLAR IN CLAD, AND 3 DOLLARS IN PENNYS AND BUNCH OF RELIACS , AND THE LITTLE GOLD CHAIN CAIN CAME UP HAS FOIL . AND YET NO SILVER 
I have really seen the same issue with CZ's over the years too with all models, especially CZ-3D's and CZ-70's...much less with CZ-5's. I would think in this day and age with the way detectors are being designed and built that this variability would be minimal. I cannot comment on how your pattern may affect your depth, however; I'm sure there are many on here than can. If you are hunting in an area old enough for coins to be deeper then it might raise my brough too...airtesting and in the field depth concerns have been discussed on here before...JMHO...HH