I got very good fill out after soaking my rcbs 405GC in kroil overnight.If you can get good fill out consistantly with those boolits it will work on anything.They really started coming out good at 850 degrees but had to let mold cool a little between pours.I soaked my new rcbs 158GC mold for one hour before using and it had very good fill out and boolits popped out easy also and I didn't deburr it or do any other pre-use stuff to it.I wish I had been using this stuff sooner.I've read the fumes are to be avoided so I cast outside or have two fans going with the exhaust being sucked outside a window with one fan when I use it in my garage.Guess I have to try out the fluid film also.Where do you find that at.I got my 10 OZ. can of kroil at an auto store.