Okay, first let's talk about how to count the song:
"Cold iron shackles, ball and chain"
Should count 1 AND 2 AND 3 AND 4 (the 4's AND comes just after "chain")
We know 4 beats on C so it's a simple chart ||: C / / /
Play that out and hear the timing and firstly slide into the C from a B.
From there Bobby does some partial chords of F then G. Here is the chart for the whole line
||: C / / / | C F G C
"You know you bound to wind up dead" - Let's count out 8 here instead of 4 above (read = remove the 'AND's)
||: C7 / B7 / | Bb7 / C7 C
(these could also be diminished 7ths by the same root but I only play 3 strings on this part so it doesn't matter and I don't include the tonic.