We would soak our BCG in automatic transmission fluid for a couple of hours, wipe them off, and shoot after that. It always kept them clean and running for a good 600 rounds before it needed to be cleaned again. I'm gonna try that and see if it helps.
So the automatic transmission fluid didn't work here either?
"If you look through your scope and see your shoe, aim higher."
-- said to me by my 11 year old daughter before going out for hogs 8/13/2011