Further to my short 10 post. Loaded up a dummy this afternoon.  Cut the 2 7/8 inch RST empty down to 2 1/2 inches removed all trace of the crimp.  Threw 19.4 of Red Dot then seated the Remington SP 10 wad on top of the powder. 
 
Dropped a 28 G nitro card wad in the bottom of the Remington wad threw 1 1/8 oz #7 1/2. on top. Still not full to the wads top or enough to fill the 2 1/2 inch case.  Added a 12 G Nitro card on top then roll crimped. Nice crimp, shake no noise and the shell finished at 2 1/4 inches 
 
I guess my basic question is which way to go 
 
Fill the wad with nitro cards to make up the stack.  16 G will fill better than 28's, and use a fairly thick overshot or Polywad spreader disk.   Or cut the Hull and Wad even shorter.  I don't want to use over about 19 of Red Dot or 1 1/8 shot. Pattern is probably the only way to tell. However thought there might be some advice out there. 
 
PS I could go to Unique about 30 grs and up the shot charge to 1 1/4 that will probably make a higher stack in the hull. However have very little Unique and don't need 1 1/4 oz for clay targets 
 
William
		 
		
		
		
		
		
		
		
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