Loading components and tools can vary depending on what you need out of them, at what range, from what firearm in what quantities.
Having a custom dies machined that you use in an arbor press, might be the ticket for 100/200 yard benchrest matches but would be less than ideal for loading for a 3 gun match rifle.
In any case, before you become too focused on OAL, you might measure the individual projectiles to see how different they are, as you could be chasing your tail. The tip isn’t what matters, it’s the contact with the lands +/- that is most important.
One can actually load ammunition that isn’t even concentric, before it’s chambered and after it’s perfect.