I use the Challenger Breach Lock press for small quantity batches - such as self defense loads.  I use my Dillon 550B for mass producing range ammo and squibs. 
 
I agree, charging the loads is painful.  Did you need a special adapter to mount the Uniflow to the expander die?  I'm wondering if this would work with my Lee powder measure... 
 
Lane
		 
		
		
		
		
		
		
			
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