barrel, the lens and grooves which make the bullet spin make marks on the outside of the bullet. they will design the barrel to have a certain direction of twist, a certain number of landing grooves, a certain measurement for the landing grooves so those are intentionally put in by the manufacturer. surprisingly when the bullets from cliff s gun were compared to the bullets from cliff s autopsy, they did not match. investigators checked all of the local pawnshops and discovered that the cowen brothers had pawned some of the alma murke s jewelry. with a search warrant police found several other items belonging to the murke s in their possession. he had a wallet. he had two social security checks which he was trying to sell. he had all types of jewelry. but investigators did not find a .25 caliber pistol like the one used in the murder.