jabberwacky said:
how long can I safely wait before doing a thorough cleaning?
Well, as you've now found out, when you ask a question on this forum, you will get answers. Some will be 180 degrees apart.
You've received some very good advice from
Roundball, Huntin Dawg and others. Roundball even quoted from the Hodgdon's reloading manual.
To recap some of the better advice:
1. Before you leave the range, use some Ballistol, WD-40, Butch's Bore Shine, etc. on a few patches. This just keeps moisture from being drawn to the corrosive salts that WILL BE in your barrel.
2. You'll get a lot of answers about how to actually clean the bore, eg. hot soapy water, cold water, commercial preps, and others. Just do it, the sooner the better.
3. One other warning. I and a lot of others like to get the bore squeaky clean, maybe even use alcohol to get every last drop of water out. You will never get all of the salts out of your bore, never. Try leaving your bore untreated for even a few minutes at this point and you'll pull out a brown rust covered patch from your barrel. To avoid this "FLASH RUST" just use some Ballistol, WD-40, transmission fluid, heck even bear grease. Just protect the bore as soon as you've cleaned it. There's a lot of things that work, just do it right away and you'll enjoy using the same barrel for years to come.