Thread: Anyone played with .30-30 subs?

As long as the rounds chamber freely you are ok, cases spring back a few thou after firing if they didn't they would stick in the chamber,
The problem with sizing dies is that they size the necks down too far and the standard expander button is for jacketed bullets
to get the best out of cast bullets a Lyman M die is required it expands the neck a little more and gives a flare to the case mouth
making seating the bullet easier, a side benefit is it doesn't stretch the neck, I use M dies for all my reloading even when using bushing dies.