###HUMAN: what is the difference in percentage of lead shot at 25 yards between cylinder and skeet 1 barrels ?, ###ASSISTANT: SELECT ABS((SELECT "percentage of lead shot in 30-inch circle at 40 yards" FROM table_203_112 WHERE "choke" = 'cylinder') - (SELECT "percentage of lead shot in 30-inch circle at 40 yards" FROM table_203_112 WHERE "choke" = 'skeet 1'))