Happy New Year....

This has been covered befor but since I'm a Traditional-BP hunter I ignored it. I have an inline, (TC Firehawk) that I've not shot since the mid 90's and decided to use it stand hunting in our late shotgun season. Took it out yesterday with 2f Tripple seven, no wonder you guys like the stuff, accurate as can be and almost no crud.

Do I have to clean the barrel after shooting or can I leave the gun loaded with a dirty bore? Will it rust the metal?

What should I use to clean it? Iknow I'll have to clean it at some point and windex seemed to work OK--anything else that is better?..

I remember hearing about the dreaded crud ring, I seem to have avoided that somehow. Anything else I should know?

Thanks
Doug