I like Windex with ammonia IT works good too no hot water .There are absolutely no flies on 777. You might have to clean a crud ring but no big deal. It always ignites which I can’t say the same for BH209. I’ve been using loose 777 for twenty years and it works. Cleans up easy with Dawn and hot water.
Blue Windex with ammonia is excellent for patching and cleaning.
For patching between shots use a slightly damp patch.
For bore cleaning use a wet pat patch