Cayugad may have hit the nail on the head. If you are using a product (powder) that does not fowl the bore to much it may be getting too clean (yeh I know) between shots. I use regular bore cleaner at the range and use the alchohol to clean out the bore before I start shooting only. I will sometimes reuse it if I have got the bore too wet but usually it is my oil removing solvent only.

Use the alchohol for your first shot then your "spit" and see if it all works good. I tend to use what works not what everyone else raves about.

I like T/C #13 at the range for spit clean and Hoppe's elite. both make an exellent spit patch. I would try one of them for between shot cleaning. Or just stay with spit.