Share 'Canning salt: do different brands vary in flavor/strength?'

Has anyone else had trouble with different brands of canning salt having different strengths?  My husband was complaining that the cucumber/dill pickles were too salty, so I thought maybe I goofed a batch and added the salt twice. Then he also thought a batch of dilly beans was too salty, and it seems unlikely that I'd make the same mistake on two different days.  I remember having to buy salt mi…