I filled an oiler bottle with Windex and keep that along with a bunch of patches and a cleaning jag in a Tupperware container in my range bag. Not too worried about the oiler bottle leaking but if it does the Tupperware will keep the stuff from geting anywhere but on the patches.
When I'm done for the day, I pull the bolt and pour some of the Windex through the barrel, follow up with a couple passes with Windex-soaked patches.
Follow that up with a good shot of CLP and then bring it home for a proper cleaning.
Does anyone know if the corrosiveness of the ammo is acid or alkali based? I didn't do all that well in science back in the day, but it seems that if it was acid based you could make a baking soda cleaning solution, or if it's alkali you could use lemon juice or vinegar...or I could be way out in left field on this one.