Shotgun bores are big - and a 12 gauge bore snake is built to match. The oversized woven floss section fills the 0.729" bore completely, and the embedded bronze brush scrubs plastic wad fouling, carbon, and lead deposits in a single pull-through from breech to muzzle. Break open your shotgun, drop the brass weight through the chamber, pull the cord out the muzzle, and the barrel is clean enough for the next round of clays or the next morning's hunt.
Shotgun shooters put more shells through in one session than most rifle shooters fire in a month. A day of sporting clays can mean 100–200 rounds, and every one of them deposits wad residue and carbon inside the barrel. Nobody wants to spend thirty minutes with a rod and brush after a fun day of shooting - and that's exactly why bore snakes exist. Apply CLP to the floss section, run it through twice, and the bore is maintained. The gun cleaning takes less time than breaking down the shotgun itself.
Experienced waterfowl and upland hunters keep a bore snake in their vest pocket for field bore cleaning. If the muzzle touches mud or snow, one pull clears the barrel instantly - a safety step that could prevent a dangerous obstruction. Washable and reusable across dozens of sessions. When the floss wears thin, replace it. Until then, this is the fastest gun cleaning tool a shotgunner can own.