Here's a cheap and easy substitute for ballistics gelatin. Use a sweet potato! They are a bit denser than regular potatoes, and seem to give about the same penetration results as ballistics gelatin. I find a big sweet potato, then cut off one end to give a flat surface to fire into, shooting into it longways. I'm not sure this would work well for high velocity rifles, but it works for me at lower velocities.
Posted on Jan 10, 2010, 1:08 AM from IP address 220.127.116.11