I use my huntsman frame for a 357Mag barrel most of the year, I only put the Huntsman barrel on just before BP season. Never had a problem.
The Huntsman (recent current production, not "A" prefix, 70's manufacture) frame is basically a SB1 strength frame. You can also use it for shotgun, and other pistol calibers, and I believe low pressure rifle barrels (like the 30-30, & 45-70).