(At a shooting distance of 15 ken [about 27 meters], common in target practice during the Edo period, the accuracy of fire is almost the same even with otori-dama, but if the distance is more than 30 ken [about 54 meters], the accuracy decreases.)
（江戸時代の射的で一般的な、射距離十五間では劣り玉でも命中率は殆ど変わらないが三十間を超えると低下が見られる）