Every session ends with cleaning. I have started to put the WipeOut foam in when I leave the range and clean it out when I get home. That gives me a headstart.

Back on topic, I've never found the boresnakes to get the bore as clean as I want or can get with the brush/patch/repeat method. I like them, though, but they are just another tool in the box. They are handy out on a hunt, too.