I was curious of this also, How does the Flitz users make out using it for the purpose of breaking in a barrel or getting it copper free?
Lastly, how do you make sure to get all the paste a Flitz or others like them out of the bore completely when finished and if it is a solvent which one is most thourough without being harmful to the bore. I am apprehensive to use ammonia based products because of horror stories I have heard. Thanks.