Slingshot first test 

I tested out my slingshot that I cast using aluminum lost foam casting. Check out the video of the metal pour here: • Lost Foam Casting a Sl...
I was using some homemade clay balls as ammunition and shot them against my brick chimney. I do not recommend shooting your house in any other area nor do I recommend shooting harder ammunition against a brick chimney.
The slingshot definitely could have performed better - I attribute this lack of performance to the cold hurting the rubber. In the summer I hope to bag a squirrel or two with steel ball bearing ammunition.