I've got a S&W model 19 in 357 that I've had for 20+ years now. Ever since I got it new when I cleaned it I noticed that when cleaning the barrel there is one place where the resistance on the cleaning rod drops significantly. It's like the barrel is swelled at that point. Not being the brightest star in the sky about guns at that point in my life (or now for that matter) I just figured that was the way it was manufactured and was normal. The gun will shoot 2-2 1/2 inch groups at 25 yards with the cheapest ammo I can buy. There is no external deformity's that I can detect. Do you think I have a problem? What do you suggest? Keep on shooting? Send to factory? Anyone else have this situation?