As for the cleaning method, you insert the cleaning rod, the end having a wet piece of cloth, into the gun muzzle and move it in and out one to two times, as black gunpowder is easily soluble in water.
その方法も、黒色火薬が水に溶けやすい特性から、洗矢の先に水で湿らせた布切れを付けたものを銃口から差込み1〜2往復させれば完了する。