Re: Ceracoat "vs" bore cleaners
When cerakote goes bad it will get a freezer burn appearance on it (in the bottle).
As long as you keep your ratio somewhere between 1:12 and 1:24 you should be fine.
When NIC re-done their durability testing, the 1:18 ratio slightly outperformed the 1:24 ratio on the marring test ONLY, and this was only marginal. That is THE only reason NIC recommends the 1:18 ratio over 1:24.
Why is this? Using a little more hardener allows the finish to get little bit harder. In return 1:24 will give you the most "matte" finish and 1:12 will give the most "glossy" finish.
As far as chemical resistance and all the other tests NIC performed, everything was equal when you stayed within those ratio's, except the marring test.
If you are wanting to go outside those ratio's, I would give NIC a call and see what they say.