So I paid $25.00 to a gunsmith to bob the hammer on my 637-2. I spoke to him in great length about the safety issue of the revolver locking back in single action and not being able to walk the hammer down once it was bobbed. He spent a long time explaining to me that the only way the hammer will lock is by pulling it back to the farthest point, pulling the trigger in double action does not cause the hammer to "set and lock". I carry the revolver in my front pocket and found the hammer to be a factor in drawing cleanly from my pocket without hanging up. I am very happy with the finished product but must warn anyone considering doing the same that it is near impossible to walk the hammer down once it has been bobbed. The gunsmith showed me how to block the firing pin with a small screwdriver if it ever became locked in single action but in reality I don't see it being very probable. I purchased the weapon in near perfect condition for $250.00 as it is my first attempt to ccw a revolver. I will take it to the range this Tuesday and see how it performs, I have it sold for more than I paid for it if I don't feel safe carrying it for self defense. Anyone else have their hammer bobbed? Would love to hear your reasons and experiences. Thanks so much.