The prosecution did not produce a weapon (neither the gun which Davis was said to have used nor the gun owned by Coles) as evidence. A ballistics expert testified that the .38 caliber bullet that killed MacPhail "could have been fired from the same gun" that wounded Cooper, but that conclusion was not definitive. The expert stated that he was confident that .38 casings found at Cloverdale matched bullet casings found near the scene of MacPhail's shooting, but could not tie the casings to the bullet that killed MacPhail.