I have used RC from day one. It's all I know, never tried anything else. I always test it before it goes into my tank from my barrel.
At 1.025 Cal is between 420-440 and a dkH Of 8.5-9. I disagree with the statement "loaded in Mag" above. It is consistently lower around 1150-1200 and I alway have to increase Mag before it goes in. My personal experience.
Torn about switching to another salt but I think it's coming.
my bad i meant to state that it has pretty good Magnesium