When throwing a chain weight to a distant opponent, the situation in which one brandishes a long chain weight as can be seen in a work of fiction is practically impossible (in addition to slow movement of the chain weight with more than one second per round, one can launch an attack on the opponent only based on the timing of rotation of the chain weight and thus the opponent can see the timing of throwing) and therefore it cannot be said that it is a practical method of attack.
距離の離れた相手に対して鎖分銅を投げる場合、フィクション作品で表現されている長い鎖分銅をブンブンと振り回す様なシーンは実際には有り得ず（一周の周期が1秒以上かかる緩慢な動きとなる上に、回転のタイミングでしか仕掛けられないので相手にも投げるタイミングが解る）、実用的な攻撃方法とは言えない。