Case Expansion?

[plus1hdcp]

I have had success using the Lee Powder thru Expansion Die on my turret press to open up the case to seat cast boolits in both 9mm and 357. I obviously could use the same die in my Hornady Lock and Load progressive press but what method(s) / case expansion die (s) / techniques have you used to expand the case with other progressive powder drops? In my case, the Hornady LnL Powder Measure.

[blikseme300]

Hornady makes and sells some Powder Through Expanders (PTX) for their powder dispensers. I have not used these but have made my own matching the dimensions I wanted for cast boolits. The weight of the dispenser is too much for some calibers especially if you anneal and for these I use a custom expander and use the Lee pro auto disk units.