Did your barrel issue occur in the 2008-2009 time frame? I ask because I was working as a patrol officer with a mid-size department (about 400 officers) at the time. The S&W J-Frame had been a the go-to backup gun for decades. Out of nowhere, the Rangemasters started seeing slightly crooked barrels on newer J-Frames that had been purchased by officers.
S&W customer service was less than helpful, and frequently sent the guns back without correcting the problem. The younger officers were already carrying compact semi-auto's by this time, but the problems with the S&W's pretty much ended the idea of a revolver in an ankle holster as a backup.
Years later, S&W was trying to get departments to adopt M&P's as their duty sidearms. One Rangemaster told the sales rep about the crooked barrels making officers hesitant to buy S&W products. The rep apologized profusely, and stated that quality control had slipped during the rush to purchase guns following the 2008 election. The rep swore that the problems had been fixed. I haven't heard of any issues since, but the department still chose to stick with Glocks.