> You don't have compression with butane into a potato gun Maybe not yours, but we tapped ours. This held the potato near the chamber after compressing the gas

> You don't have compression with butane into a potato gun Maybe not yours, but we tapped ours. This held the potato near the chamber after compressing the gasoline-air mix. I have no idea how well it held, but if you didn't seat the potato into the threads it would push the broom back out. You'd hear a poor seal leaking.