I very seriously doubt I'll ever go back to jags and patches. Ever.
I bought a pound of tow from a fiber for spinning supplier on Ebay. It was cheap. I reuse it. I'll probably never have to purchase tow again. (look for spinning fiber, flax)
A single tow worm can be used in many calibers.
Nate McKenzie's information was helpful for me to make this transition.
Only patches I need go under the ball, jags are history, brushes/scrapers never were, water
is solvent.
Pick your own water displacement oil/substance, there are many and everyone likes to add his/her twist.
+++edit: here's a source, this is what you want.
http://www.woolery.com/store/pc/Flax-Tow-1-lb-p5139.htm#.Vro8Y0KrfEg It's a bit higher than I paid, but a little goes a long way. Many shooters could probably share that to see how they like it. If any choose to not use it, could give it to other curious shooter to try.
I just weighed the tow from my last cleaning session- 6 grams. That's just under a 1/4 of one ounce or 1/64th of a pound. Most of that 6 grams had been used before.
I'd rather plant and grow flax, and then
whoop the stalks into tow/fiber than to return to patches and jags for cleaning.
photo credit: the catalog listing above