I shot quite a bit of steel before I gave up on it and switched to bismuth and/or tungsten polymer.  What I found: 1. Weigh all shot charges.  2. Weigh all powder charges.  3. Watch BP's load data, I got some high pressures that I didn't like. The data I ended up using came from Alliant and Precision Reloading.   3.  My final shot size after trying about all was #1 or B.  4.  Keep your shots to 40 yards or less and steel will work.  5.  Last, don't use steel in any of your older doubles, life is too short.  Get a gun with barrels that have been designed for it. 
C.G.B.
		 
		
		
		
		
		
		
		
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