The brake cleaner I use contains "petroleum distillates". I use it to flush out any loose crud before cleaning the stuck on crud. It is basically an aerosol flush that evaporates fast.
It doesn't contain ammonia so it doesn't cut copper.
It also works as a good flush to remove leftover cleaners and crud that has been knocked loose by it.
The cleaners work pretty well and I have found that most of the patching done is to remove debris that can be flushed out. It also smears that debris all over the bore when you patch instead of flush.
The idea is to reduce the amount of time the bore sees with a cleaning rod in it.
I found that the bore guide itself will get full of crap so you need to flush that out too.
It doesn't contain ammonia so it doesn't cut copper.
It also works as a good flush to remove leftover cleaners and crud that has been knocked loose by it.
The cleaners work pretty well and I have found that most of the patching done is to remove debris that can be flushed out. It also smears that debris all over the bore when you patch instead of flush.
The idea is to reduce the amount of time the bore sees with a cleaning rod in it.
I found that the bore guide itself will get full of crap so you need to flush that out too.