Just a word of caution about cleaning a model 29:
There is a 1/4 inch ball bearing that controls the cartridge feed. If you drop the bearing and it rolls into neverland, several cartridges will spill into the action when you operate the slide. Just replace the steel ball and everything will be OK again.
Happened to me, and the gun set un-useable for several years. The 'smith that I took it to couldn't figure it out!

Myron