i dont know about metal, but I can give the 'theoretical' progressions

major
I-can go to anything
ii- V, vii
iii- vi, IV
IV- I,ii,V, vii
V- I, vi
vi- ii, IV, V
vii-I


minor
i-anything
ii-i, V, vii
III-ii, iv, VI
iv- i, V, vii
V-i VI
VI-ii, iv
vii-i

obviously you can take these anywhere, where they would sound good thats just the text book shat

as far as metal goes there the tritone thing (root, 5, b5) or as a tab

A------2--1--
E--0---

dont know what gives it that tonal quility it just has it

__________________