I've been using the 50/50 mixture of blue winshield washer fluid and isopropyl alcohol. Kinda makes sense to me that the iso will make it dry even that much quicker, but I don't know for sure. I just mix a few oz. of the stuff and take it to the range in a small plastic jar with a top large enough so I can dip a patch in with my fingers. Then I squeeze it out before I place it on the muzzle and run it down and up - turn it over and do it again.
No problems with ignition, and it seemed to work very well for cleaning. If I feel a dirty spot (crud ring), I run the patch past that spot 2-3 times before bringing it back out.
BTW - my wife quilts a lot, so I just cut her scraps into 1 1/2" squares to use for swabbing. Works well and is free.

IN jaybe