Fastex used to offer a Case lube which is good, Barrel lube which is rubbish and bullet lube which I could never tell any difference. I used the barrel lube to try and control copper fouling build up in a particilar .270 rifle and it seemed to help so when I acquired a new Mauser M96 Slide Bolt in 6.5x55 I treated the barrel on that from new. About a year or so later whilst inspecting the rifles I noticed copper fouling at the muzzle so cleaned the rifle with copper remover and discovered light pitting under it
Contacting the agent for my area fro Fastex they were unhelpful then a few weeks later I am informed that he is out of work as they have closed up shop
it seems they did this to counter any claims as I was not the only complaint. The Fastex also reacted with the Forrest Foaming bore cleaning and caused rust on at least one other rifle.
I am still using their case lube but the bottle is getting low and I will change to another product when it's finished. However I would advise caution with the other Fastex products as it seems that if you encounter problems they cut and run.