The Scot was the first man out and his joint-best career round put him two shots clear of Englishman Richard Bland, with Mark Tullo a shot back in third.
Saltman, 27, started with a birdie, managed three in a row between the third and fifth and another to round off a scintillating front nine.
It was not all plain sailing though as he managed to hit the wrong wedge into the green to bogey the 12th, although he landed three more birdies.
“I'm very pleased with my round,” said Saltman, whose other 64 came in the second round of last year’s Nordea Masters. “It wasn’t easy out there today, with the wind swirling and getting very strong at certain points
“I just played really well tee to green and made the putts I needed to make and my short game was really good as well so I can’t really pick any faults from that round. “I have put myself in a great position and I'm here to win. I've been working very hard trying to get my game as good as I can and it’s nice to see the work paying off.”