Doing great, how are you?!

Originally Posted by: jasim.hd

So I have distortion related question. Recently I have acquired (after a long reading/researching) a new MXR Fullbore Metal pedal ...

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I've not played one, but I have heard them & they are way too much gain for what you are trying to do.

[quote=jasim.hd]

For example: I can’t get Metallica (Let’s say Lightning, MOP or Black album) sound, or Megadeth (Countdown to Extinction), or some Pantera... etc. which is the regular Heavy/Thrash sound.

Early Metallica was either a Tube Screamer or RAT ProCo into a Marshall. Or Mesa Boogie Mark II or IV.

https://www.groundguitar.com/james-hetfield-guitars-and-gear/

Mustaine of Megadeath also used Marshalls. The Pantera guy used Randalls. Other than refining your palm muting technique, I think the real key to those early metal tones is using the smooth overdrive of a dimed master volume amp. The pedals were just icing on top to give the pre-amp a push.

Hope that helps!