Just wanted to revisit this thread one last time for the benefit of those who later do a search for info on Walker nipples. I have a 2009 production Uberti Walker. The factory nipples have the following length measurements:
I purchased the Treso bronze 6 pack nipple set 11-50-136 and received them a week ago. The length measurement on them is 0.636".
At this time I haven't determined whether or not I should consider taking 0.010 off the hammer face with a file.
Does anyone have a good method to determine the amount of contact between the hammer and the nipples (if any)?