Article date, July 23. Fourteen shooters were named to the U.S. squad to compete in the 40th World Shooting Championships. Practice for final 3 events at Black Canyon Range. Scheduled to begin tomorrow are free pistol and free rifle..."YESTERDAY": Army Capt. Margaret Murdock, who already has a berth of the World Shooting Team by placing fourth in the 3-position smallbore match, doubled yesterday by winning the women's standard rifle w/a 1694 total. Joining her are second place Tricia Foster 1658 tl. and Bonny Hampson. Others earning championships yesterday; Maj.John Foster in standard rifle...and rifle ace Maj.Lones Wigger who won air rifle. Winners in following events all won U.S. Int'l Shooting Champ titles: Standard Rifle; Maj.John Foster, 1708 total, David Boyd 1700, Lones Wigger 1680. Air Rifle; L.Wigger 1132 Tl., John Foster 1124 Tl., David Boyd 1121,and Lanny Bassham 1102.