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dlbarr · March 25, 2014, 05:08 PM

Broke this gun down several months ago in order to do some mods over the winter. I draw filed the italian stampings off of it and reshaped the grips to suit me. Was going to do some action work on it but never did and just took the parts out of the box and reassembled it about a week ago. (too many other projects right now)

Anyway, after making no further mods, the mainspring seems extremely weak. It will pop 3 out of 6 caps and the hammer force is definitely weak as it gets to the tail end of its travel. The parts just sat in the box for several months and it shot just fine prior to disassembling it. In every other respect, the action seems to work fine, timing is good etc. While I have not done so frequently, this is not my first time to tear down/rebuild a revolver. Never had a challenge like this before.

What am I missing here? Got any ideas?

March 25, 2014, 05:08 PM	#1
dlbarr Senior Member Join Date: October 8, 2011 Posts: 162	Weak mainspring on a Pietta '58? Broke this gun down several months ago in order to do some mods over the winter. I draw filed the italian stampings off of it and reshaped the grips to suit me. Was going to do some action work on it but never did and just took the parts out of the box and reassembled it about a week ago. (too many other projects right now) Anyway, after making no further mods, the mainspring seems extremely weak. It will pop 3 out of 6 caps and the hammer force is definitely weak as it gets to the tail end of its travel. The parts just sat in the box for several months and it shot just fine prior to disassembling it. In every other respect, the action seems to work fine, timing is good etc. While I have not done so frequently, this is not my first time to tear down/rebuild a revolver. Never had a challenge like this before. What am I missing here? Got any ideas?