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Been running with my GMT for about 6 months now, have some awesome success bedrock shooting, pulled a little over 15 grams in the last 3 months..

Tips: Push the gain until it can't handle the ground, keep the VSAT low for depth, high for better sensitivity to smaller gold (keep in mind doing so will reduce depth)
FORGET Auto tracking... It WILL balance out small gold signals... User manual, hit gram, then manually give the machine a hot signal on the down stroke for extra sensitivity and depth.

Boost is a pain in the noisy ass, unless you have the gold in the scoop, leave it off... You will miss targets in harsh ground because of the added noise.

The 6x4 coil is a beast, but the stock 10" can damn near do it all.. 14" GoldMax is a heavy pain in the butt, and not worth the money or shoulder ache..

This machine isn't a depth demon at 48kHz, small shallow gold is its bread and butter, It will go deep on larger nuggets.. Just not that deep
I got a .61g nugget last weekend at just over 4 inches and it was just a slight threshold change... Don't expect a loud ZIP.. It's rare..

Hope some of this helps..

<blockquote data-quote="downhalo" data-source="post: 12683" data-attributes="member: 189">Been running with my GMT for about 6 months now, have some awesome success bedrock shooting, pulled a little over 15 grams in the last 3 months.. Tips: Push the gain until it can&#039;t handle the ground, keep the VSAT low for depth, high for better sensitivity to smaller gold (keep in mind doing so will reduce depth)FORGET Auto tracking... It WILL balance out small gold signals...&nbsp; User manual, hit gram, then manually give the machine a hot signal on the down stroke for extra sensitivity and depth.Boost is a pain in the noisy ass, unless you have the gold in the scoop, leave it off... You will miss targets in harsh ground because of the added noise.The 6x4 coil is a beast, but the stock 10&quot; can damn near do it all.. 14&quot; GoldMax is a heavy pain in the butt, and not worth the money or shoulder ache..This machine isn&#039;t a depth demon at 48kHz, small shallow gold is its bread and butter, It will go deep on larger nuggets.. Just not that deep <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" />I got a .61g nugget last weekend at just over 4 inches and it was just a slight threshold change... Don&#039;t expect a loud ZIP.. It&#039;s rare..Hope some of this helps..</blockquote>

[QUOTE="downhalo, post: 12683, member: 189"] Been running with my GMT for about 6 months now, have some awesome success bedrock shooting, pulled a little over 15 grams in the last 3 months.. Tips: Push the gain until it can't handle the ground, keep the VSAT low for depth, high for better sensitivity to smaller gold (keep in mind doing so will reduce depth) FORGET Auto tracking... It WILL balance out small gold signals... User manual, hit gram, then manually give the machine a hot signal on the down stroke for extra sensitivity and depth. Boost is a pain in the noisy ass, unless you have the gold in the scoop, leave it off... You will miss targets in harsh ground because of the added noise. The 6x4 coil is a beast, but the stock 10" can damn near do it all.. 14" GoldMax is a heavy pain in the butt, and not worth the money or shoulder ache.. This machine isn't a depth demon at 48kHz, small shallow gold is its bread and butter, It will go deep on larger nuggets.. Just not that deep :) I got a .61g nugget last weekend at just over 4 inches and it was just a slight threshold change... Don't expect a loud ZIP.. It's rare.. Hope some of this helps.. [/QUOTE]

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