Problem with GP 100 Need Help

Rick_014

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Location
Calgary Alberta
Hello,

I'm having problems with my GP 100, gun is 6' barrel stainless 38/357. Aprox 3000 to 4000 rounds through the gun. I had a previous problem with the spring inside the cylinder crane binding and working it's way past the retaining nut. A disassembly and cleaning as well as a slight crimp on the end of the spring seemed to have solved that problem, but I may need a new spring. Cylinder spins freely with no signs of binding. The problem I'm having recently is with the rotation of the cylinder during double action. When pulling the trigger the cylinder does not rotate smoothly corresponding with the trigger pull. On trigger pull it takes normal pressure to about half way and then seems to bind needing excessive force to go past this point to complete the pull to make the gun fire. It is during this point at mid trigger pull that the cylinder will advance rapidly and continue to rotate into position. I will mention that the trigger assembly has been completely disassembled and cleaned, with some polishing. Any help you could give as what to look for, or parts I may need would be appreciated
 
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