The bow, crossbow and firearm, if operated correctly, will produce the same effect the weapon had hundreds of years ago. However, the sling requires tremendous skill, and only people who have had extensive training can claim to match the ability of ancient slingers. Existing literature quotes ranges as little as 150m to as much as 500m (Demmin, 1964; Hogg, 1968; Korfmann, 1973; Wise, 1976; Connolly, 1981; Ferrill, 1985; Richardson, 1998b). Larry Bray set the Guinness World Record for a stone cast with a sling in 1981, achieving an impressive range of 437m (Norris, 1985). In retrospect, Mr. Bray believes he could have surpassed 600m mark with a better sling and lead projectiles (Bray, Personal Communication, March 21st, 2004). Presumably, professional slingers of antiquity who trained from childhood and relied on the weapon in battle could achieve even greater distances, perhaps approaching 700m.