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					Originally Posted by  Pete Lester
					 
				 
				Not likely. The tested loads are not identical, the 2 5/8" load used a Cheddite hull, the 2 7/8" load used a Remington hull.  I will wager use of the same hull will show closer results in pressure. 
			
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 I would say very likely , yes the change in hull will change pressures also . The testing I've done shorter hulls always produced more pressure .  Tom Arburst told me less space for gas to expand = more pressure . 
Also with the testing I had done using TSS , which always required the use of fillers , the more soft fillers ( felt , cushion wads ) = lower pressures and less consistency . As opposed to harder filler ( Nitro cards and cork ) = more pressure .
But don't take my word for it you can always call Tom Arburst , he can explain it better than me.