I've tried a lot of different solvents but my normal are Hoppes #9 and I use Butches Bore shine to clean my barrels. Both are excellent cleaners !!

I picked up a bottle a few months ago of Hoppes #9 SYNTHETIC. It's not as strong as Hoppes #9 and states it's made for more modern firearms and can be used on plastic. When I get back from the range or any other time I clean my firearms I pour a small amount out of the container and into small plastic cups. Both Hoppes #9 and Butches will eat the bottom of the container after it sits in it for a while, the Hoppes synthetic will not. I've not used the synthetic that often. Does anyone know if this product is OK for some of the new finishes ??