I have seen the same thing on a couple of mates rifles,
Some Ceracoat peeling off in flakes, and some so thin it rubbed through in weeks.. this comes down to bad prep and application not the product itself.
With that said it is a VERY thin coating just the nature of that product. Personally I think painting it on the inside of actions and on moving surfaces like bolts is a mistake no matter what they claim (makes it slicker, holds lube etc).
I have had to clean out more than one action internally due to binding from flaking off Ceraracoat.
Dont do it. Those areas should be masked of and other metal coatings used if there is problematic bare metal. There are lots of companies that use Ceracoat on their new rifles and you will notice the dont spray they inside of actions. Things like magazines with constant rub points can also wear Ceracoat off prematurely.
Ceracoats other Achilles is its adhesion to polymers/plastic. Thae nature of it as a ceramic coat means that it has to be baked quite hot to get to its final hardend tough state which can be disastrous for some plastic parts. It can be done at a lower heat for longer but it doesnt reach the same hardness as it would on metal baked hotter so therefore wears off quicker.
I I had to pick a favorite Id go with Duracoat every time. It is easier to build up thicker if needed and can be touched up easy if it takes a bad hit. It can be baked to speed up curing but it will reach maximum hardness even without baking if you give it the time it requires to properly cure. Leaving parts in the sun helps too.
Let me dig out a spec sheet and Ill post a pic of it for more info in regards to application and durability claims.
Ill also drag out some rifles and show you some close ups of the wear of both products so you can make your own decisions.
Just to be clear, I dont work for either company, I am speaking from my own person experience with both products, some of which have had the coatings applied by "professionals" and gun manufacturing companies and some by myself.
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