Hi Pete:
I can assure you frosting is pitting. It's the same thing.
I agree that frosting is a form of pitting however I argue that defining it as a frosty appearance is to say that the bore has very very light pitting. When a bore is pitted it means to me 'heavy' or 'deep pitting'.
All of these subjective opinions underlies the need to have a more common understanding of definitions in my opinion.
I don't really care what it is so long as:
1. everyone supports the idea and;
2. it is easy to interpret / difficult to miss-interpret.


















































