I have one, and will not get another. My logic was that a 357 bore snake would make short work of a revolver that usually has a 4" barrel attached to it. In my opinion, it was a big waste of money. Allow me to explain... The thing is the equivalent of running a brush through the bore twice, and then "dry-patching" it with a piece of nylon rope. I do 150-200 brush strokes, with solvent application every 30-50, and clean with a tightly-fitting jag and patch after scrubbing. I do more if there is leading in the barrel.
The bore snake has poor contact with the bore, mainly because the material is woven so that it goes in the same direction as the rifling, and is not able to fill the space. It also thins out as your pull on it. You can build a more economical and effective bore snake with twine, a couple brushes and a piece of t-shirt.