Being right handed, I find I can set the lower fixed side against my left inner thigh hold the upper fixed side 'handle' in my left hand and use my right hand for manipulating the rounds and squeezing...

Not as fast as a single stage but not so much slower if I have a table to set everything out on (such as in the 'getaway cabin' ).

A square Tupperware pint of Bullseye, a yellow dipper, a few SP primers, a few wadcutters, brass from your pocket.

Usually just to make 30 or 60 to shoot then and there, kinda fun "when you're mo-bile" (Who reference).

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Certified Curmudgeon