Did you use the wipe-out until you were getting clean patches and then scrub it and find that it required further cleaning?
Yes, that's basically it. I think Wipeout is a pretty decent product, don't get me wrong, but I find that patches alone just won't get all the fouling out.
Maybe I'm just too anal about this gun cleaning thing. Heck, I've got hunting buddies who go years at a time without cleaning their rifle bores and every year they put meat on the table. Of course, they don't reload or shoot nearly as much as I do either, though.