Ok, I'll start by stating this isn't reloading related but involves one of the materials. With that said, I'm making a lead "snake" to put inside the handlebars on one of my motorcycles. What was posted on the bike board I frequent was " fill a plastic tube with birdshot." I have the tubing-5/8" od. So now I need to fill it and then seal the ends with caulk and fish it into the bars. My questions are is "birdshot"something I just ask for and is this sold in any gun shop, ideally in the Frederick/Hagerstown area?