You may wish to try this and its cheap.

Go to the store and buy the copper "Chore Boy" pads or any other copper, woven cleaning pads.

Take a .38 caliber brush and pull strands from the copper pad and wrap them around the .38 brush until you have a tight fit in the cylinder.

Scrub. Works exceptionally well, and better than a Lewis Lead Remover. Especially on the bore.

I use the Lewis on the bore if it is heavily leaded but the Lewis does not get the lead that lies in the land corners. That's where the Chore Boy excels.

The Lewis is best for removing lead buildup in the forcing cone of the barrel, a revolver cleaning necessity I think.

Good luck.

Or buy a nice M64 (heavy barrel) in .38 Special and shoot it at the range. There's several of them on the market right now. Police buybacks I think.

The price of the M64 might rival the price of a .38 Special cylinder fit.

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Have guns...will shoot'em.