I wouldn't worry too much about shooting zero's. Not many shooters ever shoot one in a match, even in trigger pull conditions. In fact, not that many shooters shoot in the one's . Put some trigger time testing in , with different bushings and see what your rifle likes. I'm just a self proclaimed middle of the pack shooter, so that's about all this advice is worth. Consistency and agging is what its all about. In your neck tension , reloading , and shooting. Spend the money on a resizing die that matches your chamber and shooting a ppc will be a better experience.
It takes a great barrel, bullets and tune to shoot a zero.