Thank you Andy. My question was prompted by the following experience:
I decided to dig all extreme deep signals using my regular program. Once I locate a suitable candidate, I pinpoint. I noticed that sometimes, another target is picked up by the pinpoint that my regular program is not picking up. At first I thought that it would be the iron that was set to be discriminated (I set disc at 2) but this is not always the case. I have found small bullet casings and other assorted brass items by digging those signals.
Thus, I surmise that my pinpoint is going deeper than my discrimination program does.
I have compared the gold program and the pinpoint and on every target, the pinpoint seems to give me a stronger signal and even, again, pick up signals that the gold program will not.
So at the end, I thought maybe the pinpoint method was not affected by any other settings affecting my disc programs (and the All Metal gold program at that).
Now, I tried hunting with the pinpoint but it seems to 'time out', meaning, it would give me targets and then go silent. If I go over the area where it went silent after pushing the pinpoint button again, I will often get signals.
I am now exploring using the non-motion, all metal setting to try to find the deepest targets. Is the Non-Motion, all metal, true All Metal?
I will also, explore the Sensitivity settings.