J frame cylinder measurements

[hdguy]

When Smith changed their J frames to the magnum frame they changed the OA length of the cylinders. Can anyone here give me the measurements for both the standard and magnum length cylinders. Or just one or the other if you don't own both. I would greatly appreciate it. Thanks

 

[IraIII]

Standard Catalog of Smith&Wesson lists the lengths as standard - 1.53,
magnum - 1.59. I verified this with my 640 no dash, and my 649-3.

 

[hdguy]

Excellent. Thank You