I recently purchased a used 686 no dash. Everyhting appeared fine, smooth action, nice trigger. I took it to the range and put one cylinder of target 38 wadcutters through it. During shooting the cylinder gradually got harder to turn, Didn't take the 6th shot. Cylinder was hard to open. Ejected and inspected the cases. Primers normal, no primer flow evident. With no cases in the cylinder it was still hard to close and rotate. Cleaned the gun good, including the rear of the cylinder and the recoil shield. Cylinder still hard to turn, altho getting better. Did not get a free turning cylinder until I had scrubbed the rear of the cylinder and the recoil shield with a bronze brush. I am aware of the "no dash" recall (this one is not stamped), but was of the impression that that was due to primer reflow into the firing pin bushing causing lockup. Mine is hard to turn with no cases in the cylinder and no readiliy apparent cause of the binding.
Any suggestions before I call S&W. Thanks.