I use kosher salt ( cannot remember who makes it) for presenting my meat for smoking and for brining but here is a story of what happened to me in the 90’s.
I bought a set of 12" salt and pepper mill made by Peugeot from WS. , went to Whole Foods to buy salt, for the salt mill. It did not work, so I wrote to Peugeot who explained that the Peugeot wet salt mechanism has been designed for grinding damp sea salt – also known as grey salt (from Guérande, Ré, etc.). It resists salt corrosion through the use of specialized materials.
So, I went to Whole Foods again, bought grey salt that they recommended. Still problem. Thinking that my Peugeot Salt Mill was defective, called Peugeot again. I asked if I received a factory second perhaps? Peugeot then sent me a replacement but problem persisted. I actually have a large large 24"Peppermill that only my husband can use as it is too large for me. ( I have since retired that and is sitting in my pantry , as a memory of my husband)
Finally, Peugeot sent me a 567 gms bottle of La roule des epices kosher salt which may have been made for Peugeot as it has their logo . They advised me that if I run out, to buy it from Swiss Army Knife. Well, I have been buying from them since. No Problem!
Net time I run out of kosher salat for brining and barbecuing, I wil try and find the diamond brand.