How to recognize 440c slingshot

304 weak magnetic, iron absorption stone has a slight suction. 440C strong magnetic! Don't use 440, heat treatment is not good if the same as 304 out of the pit, but also than 304 easy to rust. The so-called fear of hitting the bow door is entirely a psychological problem, I have not hit once

The metal materials used to make slingshots are: zinc alloy, 304 stainless steel, 440c stainless steel, titanium alloy. Zinc alloy bows are very light to the touch and break when you break them, 304's and 440c's are comparable, 440c will rust and is magnetic. Titanium alloy bows are also light, but strong and can't be broken.