I want to make a bullet trap for 22lr and 300blk to demo silencers. I'd be shooting directly into it. 
I'm thinking using a steel tube 6-8" in diameter with an end cap as the container. What thickness and length should I go with? Then filling it with layers of sand and clay.
Watcha think?
	
		
			
		
		
	
			
			I'm thinking using a steel tube 6-8" in diameter with an end cap as the container. What thickness and length should I go with? Then filling it with layers of sand and clay.
Watcha think?
				
		
					


