I have this Golurk with dynamic punch. I was wondering that since it is slow, would the zoom lens be good for him?
But not Zoom Lens! Use No Guard. Guaranteed hit for every move is pretty nice.
A good set would be:
Golurk @ Leftovers/Life Orb
EVs: 252 Hp/252 Atk/4 Sp.def
Ability: No Guard
EDIT (CREDIT TO INFINITY AND RELICT9): Zoom Lens only increases accuracy by 20 % so Dynamic Punch maxes out at 60 % accuracy. Not worth it.
Hope this helps!