Originally Posted by
gringop
If you are only going to load 9mm,
Extra primer loading tubes. If you only have 1 tube, you can prep for 200 rounds, (load tube, dump in primer feed on the press, load tube again. If you have more tubes, you can load more ammo before reloading the primer loading tubes.
Think about a Lee factory crimp die for the 4th position. It makes making perfect ammo much easier, no chamber checking or go-nogo ammo gauging.
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If you are going to load other calibers,
Extra die holders obviously and consider another powder measure. I keep one powder measure, die holder, shell plate and pins set for 9mm and never change it. For all the other calibers, I use the other powder measure and adjust it as needed.
Gringop