I'm old school and use the Saran Wrap and leave the holster to dry with the gun in method. I make my holsters snug to start with and usually have to spend a little extra time working them in when I first start the gun in. All holster will stretch over time. I like a tight fit for two reasons, if it a good snug fit it cuts down wear on the gun finish and the holster, and once it's been used I find they only wear in or stretch to the point of a nice smooth but firm fit.