I simply spit on a patch, run the wet side down, then the dryer side. Inch groups are the norm for me doing this, and I don't have to carry fluid with me...can do the same out hunting. No residue either.
My gun is pretty consistent whether on a clean bore or swabbed bore, although the difference becomes noticeable at 200 yds. Since it takes multiple shots to sight in the gun I find it easier to hunt on a once-fired bore than a newly cleaned one. It is not unusual for me to take more than one deer in the same hunt, so it's impossible for me to always hunt on a pristine bore.