This invention relates to the process of creating a fishing line sinker using a recycled firearm ammunition shell casing. The firearm ammunition shell casing is obtained after the bullet has been fired from it. The shell casing then undergoes a process to make it capable of serving as a fishing sinker. The shell casing is made out of non-toxic brass, steel or any other rigid metal, making it a safe, non-toxic alternative as a fishing sinker. The recycled ammunition shell sinker provides an environmentally friendly means of adding weight to the casting line. Fishermen will appreciate the sinkers cylindrical design which allows for ease of attachment, unimpeded casting, fewer line tangles, and little chance of snags. The polished brass of the recycled shell casing additionally serves to attract fish and increase the fishermens chance of landing a successful catch. The entire process of creating the sinker does not involve the use of any new materials. This low cost means of creating a non toxic sinker will allow it to replace the inexpensive but dangerous lead sinkers on the market today.