There is a product out there that was developed for car audio called Dyna Mat which is specifically designed to deaden vibration... Somewhere lurking about is a Savage rifle chambered in 30/06 that the entire barrel channel is lined with the stuff fully in contact and attached to the barrel by adhesive. The thing shoots like a laser but every time you pick it up you hear rap music. Loved the rifle. Mc Hammer...not so much. Lmao