H322 and 77 grain Sierra TMKs.

[ubet]

Are you going to take out the carbide expander ball? (remove ball, re-install decap pin without it) That's a key piece of making good loads.

What’s that change/do and what’s the reason for it?


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[markm]

What’s that change/do and what’s the reason for it?

Expander ball will usually cause case neck stretch when you pull the ram back down. AND, more importantly, it gives case neck runout.

Eliminating the ball reduces greatly the amount of trimming needed and greatly improves runout. If you take out the expander ball you need to add a neck sizing die to your process because standard dies squeeze the neck down too far so that the expander ball can open them back up to size.