Here's my input on a few points that have been brought up. I don't use the Otis patches. I thought I was pretty intelligent 'till I tried to figure them out.
I wrap regular patches around a Nylon brush of the proper caliber.
I agree that the Otis kit isn't suitable for JB. You really do need a rod for that back and forth polishing action. I do feel I get just as thorough cleaning with the Otis in other cases. I just let the cleaners "work" longer between strokes.
I started to use it on a revolver, but still like a short rod better for that. Just seems easier. Same rod/brush works on barrel and cylinder. Quick and easy. Scrub, scrub, scrub.
As far as it not being long enough to use on a 700 with a bore guide, I ran into that with a Mauser. I fed it in and... where in hell's the end??? I removed the bore guide. Don't need it with the Otis.
I guess It's being anal, but I've heard target shooters saying that pulling a brass brush back through the muzzle can wear the crown. I personally have never liked it when the brush or jag on a rod exits the bore and the rod and joint are free to hit the crown. One piece rod, I mean the joint where the brush or jag screws on. I feel much safer with the one way pull of the Otis.
This is obvious, but always clean from breech to muzzle. I read a post yesterday where the guy was inserting a string cleaner in the muzzle and pulling from the breech. Doh!!!