During one of his leaves from the Marines, Oswald hunted with his brother Robert, using a .22 caliber bolt-action rifle belonging either to Robert or Robert’s in-laws.[C4-785] After he left the Marines and before departing for Russia, Oswald, his brother, and a third companion went hunting for squirrels and rabbits.[C4-786] On that occasion Oswald again used a bolt-action .22 caliber rifle; and according to Robert, Lee Oswald exhibited an average amount of proficiency with that weapon.[C4-787] While in Russia, Oswald obtained a hunting license, joined a hunting club and went hunting about six times, as discussed more fully in chapter VI.[C4-788] Soon after Oswald returned from the Soviet Union he again went hunting with his brother, Robert, and used a borrowed .22 caliber bolt-action rifle.[C4-789] After Oswald purchased the Mannlicher-Carcano rifle, he told his wife that he practiced with it.[C4-790] Marina Oswald testified that on one occasion she saw him take the rifle, concealed in a raincoat, from the house on Neely Street. Oswald told her he was going to practice with it.[C4-791] According to George De Mohrenschildt, Oswald said that he went target shooting with that rifle.[C4-792] Marina Oswald testified that in New Orleans in May of 1963, she observed Oswald sitting with the rifle on their screened porch at night, sighting with the telescopic lens and operating the bolt.[C4-793] Examination of the cartridge cases found on the sixth floor of the Depository Building established that they had been previously loaded and ejected from the assassination rifle, which would indicate that Oswald practiced operating the bolt.[C4-794] Accuracy of Weapon It will be recalled from the discussion in chapter III that the assassin in all probability hit two out of the three shots during the maximum time span of 4.8 to 5.6 seconds if the second shot missed, or, if either the first or third shots missed, the assassin fired the three shots during a minimum time span of 7.1 to 7.9 seconds.[C4-795] A series of tests were performed to determine whether the weapon and ammunition used in the assassination were capable of firing the shots which were fired by the assassin on November 22, 1963. The ammunition used by the assassin was manufactured by Western Cartridge Co. of East Alton, Ill. In tests with the Mannlicher-Carcano C2766 rifle, over 100 rounds of this ammunition were fired by the FBI and the Infantry Weapons Evaluation Branch of the U.S. Army. There were no misfires.[C4-796]